Before starting weight training for teenagers, see your doctor for a physical exam.
This program is suitable for those already accustomed to weight training.
Just like a regular weight training routine or jogging, you won't see results right away.
I should think weight training or rowing without drug abuse is a good way promote general health.
The Library section contains information on exercises for kickboxing, kickboxing aerobics, sports training, step aerobics and weight training.