Ask the guys who are doing serious triathlons if there are any limits to what can be done. The limit is right here. You've got to get physically fit between the ears. Muscles don't know anything. They have to be taught.
Jack LaLanneI was going to be a singer. If I hadn't been in my profession, I was going to be an Opera singer. That's from a young kid. I had all these records from all those famous Opera singers. I wanted to be an Opera singer - that was my whole thing and physical fitness got in the way, thank God.
Jack LaLanne