Hobbies Help Physical and Mental Health

An article from ABCNEWS.com suggests that:

Participating in leisure activities contributes to your physical and mental health and overall life satisfaction. You're healthier, happier and more cheerful. You enjoy life more," says Howard E.A. Tinsley, professor emeritus of psychology at Southern Illinois University and author of Psychological Benefits of Leisure Participation, a summary of 15 years of his research that involved interviewing 4,000 people with hobbies.

Don't know if this has been peer-reviewed or if any double-blind studies have been done to replicate Dr. Tinsley's conclusions. An intriguing theory.