The spine is the lifeline. A lot of people should go to a chiropractor but they don't know it. Jack LaLanne More Quotes by Jack LaLanne More Quotes From Jack LaLanne I'm always asking people to do something in their mind [first]. So if they're gonna do one exercise, it would be to ask themselves what they want to change about themselves in the next 12 weeks. Once they solve that, the body will follow. Jack LaLanne mind exercise people