High performance sport is when people compete in sports and try to be the best they can be. It's like a game where you try to win and be better than the other players. People who do high performance sport practice really hard and try to get better every day. They eat healthy food and exercise a lot to make sure they are strong and ready to play their sport. Some people even get special coaches to help them learn new skills and techniques. They also compete in tournaments and games against other players who are also trying to be the best. It's like playing a game of tag, but with rules and a lot more practice involved! High performance sport is a lot of hard work, but it's also a lot of fun when you love the sport you play.