Cheap authentic NHL jersey Factory Outlet limit--Cheap authentic NHL jerseys, NHL jerseys authentic 2015 New, Factory Outlet offer the best quality and maximum discounts free shipping
How Long Does an NBA Game Last? Latest Updates, NBA Results, Player Training, and Performance Optimization Tips
Content:
NBA games, a thrilling spectacle that captivates fans worldwide, have been a staple of sports entertainment for decades. In this article, we delve into the core question: "How long does an NBA game last?" Beyond this, we'll explore the latest news, delve into recent NBA results, and uncover valuable insights into player training and performance optimization techniques.
**Duration of an NBA Game:**
The duration of an NBA game is divided into four quarters, each lasting 12 minutes. However, due to various stoppages, timeouts, fouls, and breaks, the actual time of a game extends beyond the official 48 minutes. On average, an NBA game typically lasts around 2.5 to 3 hours, taking into account commercial breaks, timeouts, and halftime shows.
**Latest News and Updates:**
Staying up-to-date with the latest NBA news is essential for fans and enthusiasts. From trade deals that shift the balance of power among teams to injury updates that can impact player availability, keeping track of the ever-evolving landscape is crucial. Whether you're rooting for a specific team or simply enjoying the sport, being informed adds an extra layer of excitement to every game.
**NBA Game Results:**
The pulse of the NBA is felt through its game results. Fans eagerly await the outcomes of matches, anticipating exhilarating victories and unexpected upsets. Whether you're following your favorite team's journey to the championship or witnessing an underdog's remarkable rise, the sheer unpredictability of NBA games is what makes them so addictive. Websites and sports platforms provide real-time updates, ensuring that fans never miss a beat.
**Player Training and Performance Optimization:**
Behind every awe-inspiring slam dunk and game-changing three-pointer lies hours of dedicated training and preparation. NBA players push their bodies to the limit, honing their skills and improving their performance. From physical conditioning to honing technical prowess, the commitment to excellence is unwavering. Players strive to optimize their agility, speed, and endurance, giving them a competitive edge on the court.
*Tips for Optimizing Performance:*
1. **Balanced Training:** A holistic approach to training, including strength, endurance, and flexibility exercises, can enhance overall performance.
2. **Nutrition and Recovery:** Proper nutrition and adequate rest are essential for sustained peak performance and injury prevention.
3. **Mental Resilience:** Developing mental toughness and focus helps players navigate high-pressure situations with confidence.
4. **Skill Refinement:** Regular practice sessions dedicated to refining shooting, passing, and defensive skills contribute to consistent improvement.
5. **Team Dynamics:** Building chemistry with teammates fosters effective communication and seamless coordination during games.
In conclusion, the captivating world of NBA games extends beyond the action on the court. Understanding the duration of games, staying updated with the latest news, and appreciating the dedication that players put into their training are all part of the holistic NBA experience. So, whether you're a die-hard fan or a casual observer, there's always something to explore and enjoy in the realm of NBA basketball.nfl jerseys from china Online Store 100% Satisfaction Guarantee.--Dividend Days nfl jerseys from china 100% Chance of Savings Better Buck Buys Outlet online store offer you low price nfl jerseys from china the hospitable customer service and the fastest delivery Peaks and Valleys in a Player's Career: Challenges and Opportunities in Professional Development
In the world of sports, athletes undergo a journey of highs and lows, facing a myriad of challenges and opportunities throughout their professional careers. From the euphoric peaks of success to the daunting valleys of adversity, their experiences shape not only their athletic abilities but also their character and determination. In this article, we will delve into the intricacies of a player's career, exploring the significance of their peak moments, the importance of sports volunteers and community engagement, as well as the challenges and opportunities they encounter on their path to greatness.
At the pinnacle of a player's career, they reach the zenith of their performance, achieving remarkable feats that leave a lasting mark on the sport they represent. These high points are often the culmination of years of hard work, dedication, and perseverance. A player's peak moments can be epitomized by breaking records, winning championships, and receiving prestigious accolades. The sense of accomplishment and fulfillment that accompanies these achievements can be unparalleled, instilling a sense of pride not only in the player but also in their fans and the entire sporting community.
However, amidst these glorious peaks, there are also inevitable valleys that players must navigate. The lows in a player's career can manifest as injuries, performance slumps, or personal challenges that hinder their progress. Such difficult times can be emotionally and mentally draining, testing the player's resolve and resilience. Nevertheless, it is during these trying periods that players have an opportunity to learn valuable lessons, strengthen their determination, and come back stronger. These lows, though disheartening, are an integral part of the journey, and they often serve as a turning point, leading players to rediscover their passion and drive.
Beyond the player's individual efforts, the support and dedication of sports volunteers and community engagement play a crucial role in shaping the future of sports. Sports volunteers selflessly contribute their time, skills, and expertise to nurture the talents of aspiring athletes. They act as mentors, guiding young players through the highs and lows of their careers and offering valuable insights and advice. Moreover, community engagement initiatives foster a sense of belonging and unity, encouraging more individuals to participate in sports and embrace a healthy and active lifestyle.
While a player's journey is filled with triumphs and setbacks, it is essential to acknowledge that each challenge presents an opportunity for growth. As players strive to reach their full potential, they encounter various hurdles that require them to adapt, innovate, and evolve. From exploring new training techniques to embracing sports science and technology, players have the chance to redefine the boundaries of human performance. Moreover, the ever-expanding reach of media and digital platforms offers players a global stage to showcase their skills and connect with a diverse and engaged audience.
In conclusion, a player's career is a compelling narrative of peaks and valleys, challenges and opportunities. The moments of triumph and adversity shape not only their athletic prowess but also their character, making them resilient, determined, and inspiring role models. As sports volunteers and community engagement continue to play a pivotal role in nurturing talent and fostering a sense of community, the future of sports appears bright and promising. With each challenge encountered, players have the chance to rewrite their destinies and leave an indelible mark on the world of sports, inspiring generations to come.mlb jersey | Tumblr--Post anything (from anywhere!), customize everything, and find and follow what you love. Create your own Tumblr blog today. idCheap Nike NFL Lesean Mccoy Jersey Free Shipping – Lesean Mccoy Jersey From China--Cheap Nike NFL Lesean Mccoy Jersey Free Shipping – Lesean Mccoy Jersey From ChinaUnveiling the Legends: All-Time NHL Goal Leaders in Colorado
In the thrilling world of hockey, the Colorado NHL franchise has witnessed some remarkable players over the years. Let's take a closer look at the all-time NHL goal leaders who have made their mark while donning the Colorado Avalanche jersey.
1. Joe Sakic:
One cannot discuss the history of the Colorado NHL team without mentioning the iconic Joe Sakic. A true legend of the game, Sakic's exceptional skills and leadership qualities propelled him to the top of the goal-scoring charts. His sniper-like accuracy and blistering shot made him a nightmare for opposing goaltenders. Sakic's 625 regular-season goals place him at the pinnacle among all Avalanche players, etching his name in NHL history.
2. Peter Forsberg:
Known for his electrifying style of play, Peter Forsberg was one of the most dominant forwards of his era. While injuries hampered his career, Forsberg's impact on the ice was undeniable. His undeniable skill set, along with his solid scoring ability, earned him a reputation as an offensive force. With 252 goals for the Avalanche, Forsberg's legacy as one of the all-time greats of the NHL is firmly secured.
3. Milan Hejduk:
Milan Hejduk may not be the first name that comes to mind when discussing NHL legends, but his contributions cannot be overlooked. Hejduk's exceptional goal-scoring ability and offensive instincts made him a vital component of the Avalanche's success during his career. With 375 goals, Hejduk ranks third on the all-time goal-scoring list for the Colorado franchise.
4. Gabriel Landeskog:
As the current captain of the Colorado Avalanche, Gabriel Landeskog continues to etch his name in the history books. A natural leader with a knack for finding the back of the net, Landeskog has become a consistent goal scorer throughout his career. His scoring touch and strong presence in front of the net have propelled him to fourth place on the Avalanche's all-time goal-scoring list.
5. Nathan MacKinnon:
The dynamic Nathan MacKinnon has taken the NHL by storm in recent years. A versatile forward with incredible speed and skills, MacKinnon has quickly climbed the ranks of the all-time goal leaders for the Colorado franchise. With his ability to create scoring chances and find the back of the net, MacKinnon has solidified himself as a key player in the Avalanche's quest for success.
Honorable Mentions:
Alex Tanguay, Valeri Kamensky, and Pierre Turgeon also deserve recognition for their contributions to the Colorado Avalanche's goal-scoring history.
In conclusion, the Colorado NHL franchise has been blessed with exceptional goal scorers throughout its history. From the legendary Joe Sakic to the current stars like Gabriel Landeskog and Nathan MacKinnon, these players have left an indelible mark on the team's record books. As the franchise continues to evolve, fans eagerly await the next chapter in the Colorado Avalanche's goal-scoring legacy.
Note: This SEO article aims to provide detailed insights into the all-time NHL goal leaders specific to the Colorado NHL franchise. The technical writing style ensures a detailed and informative piece for readers seeking in-depth knowledge in the subject matter.High Quality (Mens Womens Kids) Dallas Cowboys Bruce Carter Authentic Nike Autographed Jersey (Elite Game Limited) 54 Navy White Silver Outlet Factory Shop--Save Up To 60% On Authentic (Mens Womens Kids) Dallas Cowboys Bruce Carter Authentic Nike Autographed Jersey (Elite Game Limited) 54 Navy White Silver Best Deals At NFL Jersey Outlet Store.Guarantee Delivery & 247 Online Service! "A Comprehensive Guide: What NFL Teams Play Today and the NBA Game Pass"
In today's fast-paced world of sports, staying updated with the latest NFL and NBA action is crucial for any avid fan. This comprehensive guide will provide you with all the details you need to know about which NFL teams are playing today and how to access the NBA Game Pass for an unmatched viewing experience.
NFL Games Today:
------------------
As an NFL enthusiast, knowing the schedule of games being played on any given day is essential to plan your viewing time accordingly. The NFL features a plethora of exciting matchups, and keeping track of your favorite teams can sometimes be a daunting task. Fortunately, with this guide, you won't miss a single second of the exhilarating action.
The NFL season is divided into the regular season and playoffs. During the regular season, which typically starts in September and spans 17 weeks, each team plays 16 games. The schedule for each week is released well in advance, and this is where the real excitement begins for football fans.
To find out which NFL teams are playing today, you can visit the official NFL website or download their dedicated app. The website and app provide up-to-date information about the game schedule, including the date, time, and teams competing. Additionally, popular sports news websites often have a section dedicated to the daily NFL schedule.
NBA Game Pass - Your Gateway to Live NBA Action:
-----------------------------------------------------
If you're an ardent basketball fan, the NBA Game Pass is an indispensable tool for enhancing your basketball viewing experience. The NBA Game Pass offers live streaming of every NBA game throughout the season, giving you the freedom to watch your favorite teams and players in action, regardless of your location.
The NBA Game Pass provides various subscription options, ranging from monthly to full-season passes, allowing you to choose the plan that best suits your preferences and budget. Moreover, this service often offers exclusive content, such as interviews, highlights, and behind-the-scenes footage, providing you with a more immersive NBA experience.
To access the NBA Game Pass, you can visit the official NBA website or download the NBA app from your preferred app store. Once subscribed, you can enjoy the games on your smartphone, tablet, computer, or smart TV, making it convenient to catch the games even while on the go.
Conclusion:
----------------
In conclusion, as a dedicated sports enthusiast, staying informed about the NFL games being played today and utilizing the NBA Game Pass for live NBA action is paramount. With the convenience of technology at your fingertips, you can experience every thrilling moment of your favorite sports, ensuring you never miss a beat.
Whether you're rooting for your beloved NFL team or indulging in the captivating world of professional basketball, these resources will keep you connected to the heart-pounding excitement of the NFL and the fast-paced action of the NBA. So, gear up, grab your snacks, and immerse yourself in the captivating world of sports with the NFL games today and the NBA Game Pass!Buy Cheap Nike NFL Jerseys & Cheap NFL Jerseys - Deer Hill B&B INN--Buy the cheapest nike jerseys, buy cheap nfl jerseys from china, buy the best quality authentic jerseys!Cheap NFL Deals Online and In Store - Hot UK Deals--The Hot UK Deals community hunts down the cheapest NFL deals and voucher discounts. Don't pay retail price on your NFL purchase. Learn More...Exploring the Confluence of Sports Culture: Reds MLB, Sports Camera Technology, and ESPN Scoreboard MLB
Sports have always been a vital expression of culture, with their unique ability to bring people together, instill passion, and showcase the human spirit. In this technical article, we delve into the intriguing world of sports culture, focusing on the intersection of Reds MLB, sports camera technology, and the revolutionary ESPN Scoreboard MLB.
Reds MLB, also known as the Cincinnati Reds, stands as one of the most iconic baseball teams in history. With a rich heritage and a loyal fan base, Reds MLB encapsulates the essence of sports culture. The team's triumphs and tribulations over the years have resonated with fans, transcending mere entertainment to become a symbol of unity and identity.
One of the key components enhancing the experience of sports culture is the advanced sports camera technology employed during MLB games. Gone are the days of static camera angles; modern sports broadcasts use state-of-the-art camera equipment to capture the action from every angle. This technology not only immerses viewers in the game but also enables coaches and players to analyze and strategize more effectively. From high-speed cameras capturing incredible feats of athleticism to aerial drones providing breathtaking overhead views, sports camera technology has revolutionized the way we perceive and celebrate sports.
A crucial aspect of modern sports culture is the integration of data and statistics to understand player performance and game dynamics. ESPN Scoreboard MLB takes this to the next level by providing real-time updates and comprehensive statistics during MLB games. This digital marvel not only enriches the viewing experience but also empowers fans with a deeper understanding of the sport they love. Whether it's tracking a pitcher's strikeout rate or a batter's on-base percentage, ESPN Scoreboard MLB keeps fans engaged and informed throughout the game.
The symbiotic relationship between Reds MLB, sports camera technology, and ESPN Scoreboard MLB has profound implications for sports culture as a whole. It elevates the spectator's involvement, encourages participation, and amplifies the emotional connections between fans, players, and teams. Sports are no longer confined to the stadium; they are accessible on various platforms, transcending geographical boundaries and uniting fans from across the globe.
As technology continues to advance, we can expect even more innovations in the realm of sports culture. Virtual reality experiences may transport fans directly to the dugout or allow them to witness a game-winning home run from the outfield seats. Artificial intelligence could enhance coaching strategies and predict player performance with remarkable accuracy. The possibilities are endless, and the future of sports culture promises to be an exhilarating journey.
In conclusion, the confluence of Reds MLB, sports camera technology, and ESPN Scoreboard MLB represents the evolution of sports culture in the modern era. It showcases how technical advancements have seamlessly intertwined with the spirit of sports, creating a more immersive, engaging, and connected experience for fans worldwide. As we embrace these innovations, let us never forget that at the heart of it all lies the undying passion and love for the game of baseball.Cheap NHL Hockey Jerseys For Really Hockey Fans--buy cheap nhl jerseys from nhl hockey jerseys store online, low price & hight quality.A Comprehensive Overview of Transfer Deals in the World of Football
Introduction:
Transfer deals play a crucial role in the world of football, shaping the dynamics of clubs, players, and the overall sport. This article aims to provide a detailed exploration of transfer transactions, their significance, and how they impact the football ecosystem.
Understanding Transfer Deals:
Transfer deals refer to the agreements made between football clubs for the movement of players from one team to another. These deals can involve substantial sums of money, representing a major investment for both the buying and selling clubs. Such transactions often involve negotiations between clubs, agents, and the players themselves.
The Significance of Transfer Deals:
Transfer deals hold significant importance for both clubs and players. For clubs, these deals allow them to strengthen their squads by acquiring talented players who can enhance team performance. The arrival of a new star can create excitement among fans and boost the club's marketability.
On the other hand, players benefit from transfer deals as they have the opportunity to join a club that offers better career prospects, playing time, or financial rewards. Transfers provide players with a chance to showcase their skills in a different environment and potentially secure lucrative contracts.
Factors Affecting Transfer Deals:
Several factors influence the outcome of transfer deals. Firstly, the performance and reputation of the player in question significantly impact the transfer fee. Well-established and highly talented players often command higher transfer fees compared to emerging talents.
Additionally, the financial strength of the buying club plays a crucial role in determining the feasibility of a transfer deal. Clubs with significant financial resources are more likely to afford expensive transfers. Financial fair play regulations introduced by governing bodies have also influenced the spending power of clubs.
Player Contracts and Agents:
Transfer deals are intricately connected to player contracts and the involvement of agents. Players with existing contracts must obtain permission from their current club to negotiate with potential buyers. Simultaneously, agents play a vital role in facilitating negotiations, ensuring the player's interests are protected, and maximizing their earnings through transfer fees and contract bonuses.
Transfer Window and Deadline Day:
The transfer market operates within specific time frames known as transfer windows. During this period, clubs are allowed to conduct player transfers. The transfer windows vary from league to league but typically occur during the off-season and mid-season.
Transfer deadline day marks the final day of the transfer window, often characterized by frantic negotiations and last-minute deals. It is a time of immense excitement for fans and media, as clubs make frantic attempts to secure final signings before the window slams shut.
Conclusion:
Transfer deals represent the lifeblood of modern football, shaping the landscape of the sport and creating endless possibilities for clubs and players alike. The intricate negotiations, financial implications, and the passion surrounding transfer transactions make them a captivating aspect of football. By understanding the details and significance of transfer deals, one gains a deeper appreciation for the complexities underlying the beautiful game.China Cheap Replica Soccer Jerseys, China Cheap Replica Soccer Jerseys Manufacturers and Suppliers on Alibaba.com--China Cheap Replica Soccer Jerseys, China Cheap Replica Soccer Jerseys Suppliers and Manufacturers Directory - Source a Large Selection of Cheap Replica Soccer Jerseys Products at soccer jersey ,custom soccer jerseys ,soccer jersey 2018 from China Alibaba.com
nfl jerseys wholesale,oklahoma city thunders jerseys --cheap jerseys wholesale,nfl jerseys china,wholesale jerseys china,nfl jerseys authentic,nfl jerseys from china,wholesale nfl jerseys,cheap nfl jerseys,stitched nfl jerseys,mitchell & ness jerseys,nfl throwback jerseys,youth nfl jerseys,cheap authentic mlb jerseys,wholesale nhl jerseys,nba jerseys china,wholesale ncaa jerseys The Duke Blue Devils: A Mecca for Sports Memorabilia and Grassroots Sports Enthusiasts
Introduction:
If you're a sports fan, particularly one who adores the Duke Blue Devils from Durham, North Carolina, then this article is exclusively tailored for you. Join us as we delve into the world of sports memorabilia and discover the thriving culture surrounding grassroots sports and merchandise shops associated with the legendary Duke Blue Devils.
Duke Blue Devils: A Legacy Engraved in Sports History
The Duke Blue Devils sports teams, representing Duke University, have always been synonymous with excellence and achievement. With a rich history spanning over a century, these teams have left a lasting impact on the sports world. From basketball to football, lacrosse to soccer, the Blue Devils' dedication to perfection is unwavering.
Sports Memorabilia: The Treasured Souvenirs
For passionate fans, collecting sports memorabilia is an integral part of their devotion. Duke Blue Devils enthusiasts are no exception. From autographed basketballs to game-worn jerseys, these prized possessions not only showcase their allegiance but also serve as a tangible connection to their favorite players and moments in history. Authenticity and rarity are highly valued in this collectibles market, making them all the more valuable and sought after.
Grassroots Sports: Fostering the Duke Spirit
The Duke Blue Devils' success has not only inspired fans, but also led to the flourishing of grassroots sports. Local communities have witnessed how the Blue Devils' achievements have motivated young athletes to embrace the values of teamwork, dedication, and perseverance. Grassroots sports programs have emerged, introducing aspiring players to the game while instilling Duke's winning spirit into their hearts.
Merchandise Shops: A Haven for the Blue Devils Faithful
To cater to the ever-growing demand for Duke Blue Devils merchandise, numerous merchandise shops have cropped up throughout the country. These stores offer an extensive range of products, including apparel, accessories, home d???|cor, and more. Fans can proudly display their loyalty by donning Duke-themed clothing or decking out their living spaces with Blue Devils memorabilia. These merchandise shops are not mere retail spaces but serve as vibrant hubs where fans can connect, share stories, and unite in their love for the team.
Conclusion:
In conclusion, the Duke Blue Devils have undeniably left an indelible mark in the world of sports. Their rich history, coupled with the passion of their devoted fans, have given rise to a thriving culture of sports memorabilia and grassroots sports. The merchandise shops that cater to these enthusiasts serve as more than just retail establishments; they are havens where supporters can celebrate their shared love for the team. So, if you find yourself captivated by the Duke Blue Devils or simply appreciate the essence of sports as a whole, venture into this world and experience the magic firsthand.Philadephia Phillis, MLB Kids Jerseys, Wholesale MLB Kids Jerseys, China MLB Kids Jerseys,Discount MLB Kids Jerseys, Cheap MLB Kids Jerseys, Authentic MLB Kids Jerseys, Replica MLB Kids Jerseys, Youth MLB Kids Jerseys, Official MLB Kids Jerseys, Pro Bowl MLB Kids Jerseys, Super Bowl MLB Kids Jerseys--Philadephia Phillis, MLB Kids Jerseys, Wholesale MLB Kids Jerseys, China MLB Kids Jerseys,Discount MLB Kids Jerseys, Cheap MLB Kids Jerseys, Authentic MLB Kids Jerseys, Replica MLB Kids Jerseys, Youth MLB Kids Jerseys, Official MLB Kids Jerseys, Pro Bowl MLB Kids Jerseys, Super Bowl MLB Kids Jerseys Comprehensive Guide to Sports Rehabilitation and Event Scheduling
In the fast-paced world of sports, the importance of effective sports rehabilitation and meticulous event scheduling cannot be understated. This comprehensive guide delves into the intricacies of sports rehabilitation and the crucial aspect of organizing sporting events. Whether you're an athlete or a sports enthusiast, understanding these elements is essential for success in the realm of sports.
**Sports Rehabilitation: Restoring Athletes to Their Peak**
Sports rehabilitation is a specialized field that focuses on helping athletes recover from injuries and enhance their performance. The process involves a combination of medical expertise, tailored exercise programs, and cutting-edge technology to ensure athletes regain their optimal physical condition.
Injury Prevention: The foundation of successful sports rehabilitation lies in injury prevention. Athletes undergo rigorous training, pushing their bodies to the limit. However, this intense training also increases the risk of injuries. Sports rehabilitation professionals work closely with athletes to develop preventive strategies that minimize the risk of injuries during training and competition.
Customized Treatment Plans: No two athletes are the same, and neither are their injuries. Sports rehabilitation experts design customized treatment plans based on the specific needs of each athlete. These plans may include physical therapy, strength training, flexibility exercises, and more. The goal is to address the injury while simultaneously enhancing overall performance.
Cutting-edge Technology: Modern sports rehabilitation incorporates advanced technologies such as biomechanics analysis, motion tracking, and virtual reality simulations. These tools enable precise assessment of an athlete's movements, helping professionals make informed decisions about their rehabilitation progress.
**Event Scheduling: Precision in Planning**
The success of a sporting event hinges on meticulous event scheduling. From major international tournaments to local competitions, proper scheduling ensures a smooth and engaging experience for both participants and spectators.
Balancing Competing Interests: Organizing a sports event requires coordination among various stakeholders, including athletes, coaches, venues, and sponsors. A well-designed schedule considers the interests and constraints of each party, ensuring a fair and effective competition.
Optimal Resource Utilization: Efficient event scheduling maximizes the use of resources such as venues, equipment, and personnel. This not only reduces costs but also minimizes the environmental impact of the event.
Managing Time Zones: In global sporting events, dealing with different time zones is a challenge. Event organizers must carefully schedule matches and activities to accommodate participants and viewers from around the world.
Adapting to Changes: Flexibility is key in event scheduling. Weather conditions, unforeseen circumstances, and even last-minute changes in participants can disrupt the original schedule. Event organizers must be prepared to adapt and make quick decisions to keep the event running smoothly.
In conclusion, the worlds of sports rehabilitation and event scheduling are intricate and vital components of the sports industry. While sports rehabilitation ensures athletes recover and perform at their best, event scheduling guarantees a seamless and engaging experience for all involved. Embracing the technical aspects of these fields can lead to enhanced sports performance and unforgettable events that captivate audiences worldwide.Cheap NHL Jerseys For Sale,Cheap Authentic NFL Jerseys--NFL Jerseys China,Cheap NFL Jerseys China,Dallas Cowboys Jerseys,Cheap Authentic Jerseys,Customized Jerseys,Wholesale NFL Jerseys,Custom NFL Jerseys,College Football Jerseys,Cheap Basketball Jerseys,China Jerseys,Cheap Jerseys Online,Hockey Jerseys Cheap