I saw an interview with him and I was not impressed. He said by looking around at the gym you can tell whose happier. People on treadmills and other cardio machines don't look happy. He said people doing weights are happy and talking and all that. But that's just not scientific. Plus people at the gym doing weights have more of an opportunity to talk during breaks. But that doesn't make them more happier or healthier or leaner. He's a money maker.