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 graying of professional tennis has accelerated dramatically in recent years. The numbers are remarkable: â¢ The average age of the current top 10 in men's tennis is 27.0. A decade ago, it was 24.6; 20 years ago it was 23.2. Ten years ago, four still-active players -- Federer, Lleyton Hewitt, Juan Carlos Ferrero and Roddick -- were already in the top 10. â¢ Today's top 10 women average 25.1 years in age.