The American T'ai Chi Associates recommends looking for a school that adheres to the original principles of the martial art it offers, rather than one that dilutes them by, say, pairing jujitsu with kickboxing: The purer the teaching, the more your child stands to gain.
The mean calories burned per minute of tennis, based on the list of 5 activities, shown below, for an average male, weighing 190 pounds (86 kg) is 9 Calories per minute. The average per minute for an average female, weighing 163 pounds (74 kg) is 7 Calories per minute.
The amount of calories burned while playing depends on whether you walk or ride on the course. If you weigh 155 lbs., playing golf while carrying your clubs uses about 410 calories per hour. Since playing nine holes of golf takes about two hours, playing the half-round should use about 820 calories.