1: Richard Simmons gets paid to exercise like a lunatic. You don't.
2. Aerobic exercises stimulate and speed up the heart. So do heart attacks.
3. Exercising around small children can scar them emotionally for life.
4. Sweating like a pig and gasping for breath is not refreshing.
5. No matter what anyone tells you, isometric exercises cannot be done quietly at your desk at work. People will suspect manic tendencies as you twitter around in your chair.
6. Next to burying bones, the thing a dog enjoys mosts is tripping joggers.
7. Locking four people in a tiny, cement-walled room so they can run around for an hour smashing a little rubber ball -- and each other -- with a hard racket should immediately be recognized for what it is: a form of insanity.
8. Fifty push-ups, followed by thirty sit-ups, followed by ten chin-ups, followed by one throw-up.
9. Any activity that can't be done while smoking should be avoided.