An exercise computer monitors the exercises of a user, especially a child, and provides rewards for exercises done well and regularly, thereby motivating the user. Rewards take the form of video games, cartoons, music, and merchant coupons. The exercise computer also provides encouragement and advice as the user progresses in skill level. Exercises may be prescribed. A record of exercise performance can be produced, to track the user's progress over time. The system and method can readily utilize the current install base of handheld computers and video games pre-existing in the marketplace.