Bill Nye

Throughout his remarkable business and government career, Robert Rubin, now 65, has both worked exhaustively at reaching well-founded conclusions and rejected the idea that anything - and he means anything - can be a 'provable certainty.'

I work out religiously. It's great for my back. It's great for my core. I've been exposed to lots of exercise regimens and movement classes as an actor, so I understand the importance of stretching and staying limber, but Pilates is what's really spoken to me. It works everything out.