Check your endurance. Try it and see how far you can go before you're really breathing hard. A pound of fat actually contains 3,500 calories. A quarter-pound burger with cheese has 600 to 800 calories. The average child spends 17 hours a week in front of the TV screen in addition to the time spent on video and computer games.
Exercise can be fun.
Soccer, basketball, riding a bike or anything that gets you breathing hard is good for your heart.