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 LaLanneThe most important thing in your life is your health and your body. You can have all the education and you can have millions of dollars in the bank, but if you've got headaches every day, if you're fat and you are out of shape - what good is your money? Your health account and your bank account, build them both up!
Jack LaLanneYou see, you don't get old from age, you get old from inactivity, from not believing in something.
Jack LaLanne