We regularly field questions on this topic: Is there an appropriate age for young patients to begin a strength training regimen? Can they use machines, or free weights? Should they work on muscle tone, or bulk? What are the risks? Dr. Paul Stricker, team physician for the 2000 US Olympic swim team in Sydney, evaluates gender patterns, contraindications and prehabilitation benefits of pediatric strength training programs. Dr. Bill Rutenberg hosts.