Everything you do in life, I don't care, good or bad - don't blame God, don't blame the devil, don't blame me, blame you. You control everything! The thoughts you think, the words you utter, the foods you eat, the exercise you do. Everything is controlled by you.
Jack LaLanneMuscle 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 LaLanne