To fulfill the requirements of our barbell prescription, an exercise must satisfy two sets

of criteria. First, for the reasons I've elaborated at length in previous videos and in

our book, the exercise should be a powerful driver of strength development and muscle growth.

As Ripito and others have pointed out, this means the exercise should involve

the largest amount of muscle mass to move the most weight over the longest, normal, and

effective range of motion. When we apply these three simple criteria, a lot of exercises you

see people doing at the circus just drop right out of consideration.

Thank God.

Our second set of criteria are those that apply to the prescription of any medicine.

The exercise has to be safe.

It has to be docible.

It must be as comprehensive in its effects as possible.

It must be effective, meaning it must attack the sick aging phenotype.

And it must be simple and efficient.

The cornerstone of our prescription, the exercise we call the squat, meets these criteria.

And so, if you're over 40 or 50 or 60 or 90, you should squat. This means you.

This means you.

Hi, I'm Jonathan Sullivan and welcome back to Greysteel. Let's begin our discussion

of the squat with a simple question. What is it exactly? The squat is simply an exercise

in which the hips are lowered and then raised. This covers a lot of ground. Body weight squats

just raise and lower, you know, the body's weight. Goblet

squats involve a weight held in the hands and the hips are then raised and lowered.

...