Via David Despain comes this from Jim Hill, professor of pediatrics and medicine at the University of Colorado School of Medicine, on the concept of active regulation:
Our biology works best at high levels of physical activity. Obesity is in the ‘unregulated zone.’ When physical activity increases, you enter ‘regulated zone’. Physical activity may help the ‘regulatory system’ work better.
This is why I’ve been following Mark Sisson’s fitness pyramid. No Biggest Loser-style exercise for me (been there, done that), as it seems likely that any weight regulation system will function best when we are living in a manner consistent with our evolutionary past.