If you are truly interested in size and strength, you need to train your legs. — and one of the best leg exercises is the barbell squat. In fact, heavy squats have built the foundation of some of the greatest strength athletes in history.

Here’s a look at the great John Davis squatting at Ed Yarick’s Gym in Oakland, California in the 50’s — and that’s how you should be squatting: full and deep.

No monkey business there, just pure power development.

I’m not a fan of squatting with a board under the heels but it seems to work for John Davis, who was Twice Olympic Weightlifting Champion (1948 and 1952) and Six Time Senior World Weightlifting Champion (1938, 1946, 1947, 1949, 1950, 1951).