Muscle cells strengthen in response to intense exercise - whether you're 18 or 88. But the intensity is what's lacking in most people's workouts. And there are doctors who'll give you the advice, "Well, don't push it."
Jack LaLanneIf you're tired and pooped out all the time, do you have love and compassion in your heart for your fellow man? You don't even like yourself!
Jack LaLanneMany so-called spiritual people, they overeat, drink too much, they smoke and don't exercise. But they do go to church every week and pray 'Please help my arthritis. Please help me bring up my strength, make me young again.'
Jack LaLanne