Jack LaLanne: I say if you enjoy it, do it. Let me ask this: when you are at the gym, how long do you rest before you do the next exercise?

Jack LaLanne: I say if you enjoy it, do it. Let me ask this: when you are at the gym, how long do you rest before you do the next exercise?

Share Guide: Generally I do two sets of 10&endash;12 reps with a minute in between.

Jack LaLanne: That's too long. I rest ten seconds between sets.

Share Guide: Two sets per exercise?

Jack LaLanne: That is the very minimum. I do 20 sets for deltoids, 20 sets for pecs, and 20 sets for lats. It's important to change things around. Maybe for 30 days I might do ten reps with high weight, but the tenth rep should be to failure.

Share Guide: Meaning you can't quite do it?

Jack LaLanne: That's it. Then you build muscle and you build strength. Then for say 30 days I'll cut the weight down a bit and do fifteen reps. Then maybe for 30 days I'll add weight and do only 5 or 6 reps, then for another 30 days I'll do everything really slow. Try that sometimes. Like you are doing a prayer. Eight counts to bring it up and eight counts to let it down. That is very hard, I'll tell you! Then I'd do everything for a while real fast. You aren't used to any of this so the body responds. Pretty soon the hips and knees start to go, doing the same thing day after day. I am also very high on pool exercises. I started doing exercises when I was 15 or 16 years old called Jack LaLanne Hydronastics. I worked every muscle of the body in the pool. It's very effective.