These problems can be reduced with stretching exercises. This raises their temperature and makes them more resistant to injury. Warming up also prepares the heart and lungs for exercise and tunes up the central nervous system. It's essential to cool down after a workout. If exercise is stopped suddenly, without a cool-down, the heart continues to pump extra blood.
Blood then pools in the limbs, leading to faintness and cramps .
Learning Good Sportsmanship Teenagers often get hurt in sports, and the injuries are not always physical. Humiliation can hurt teenagers' pride. Intimidation can cause them to learn to dislike sports. Instead of learning sportsmanship and fair play, they may learn the opposite. Often, these problems are the result of an increasing emphasis on winning in an overly competitive world.