One of a few YouTube videos on valves that tells you the best technique to engage maximum tension.

Thanks for sharing very informative

Great calf development, the front of the calf is not developed or addressed in the workout. I like to put a 25lb plate on the top of my feet while sitting on a bench and squeezing the front side of the calf to elevate the plate. Do very high rep set and keep the tension on this forgotten muscle and it will GROW! This adds another dimension to your calves and looks great.

Awesome video. Anyone know the tune for the intro???

When I an using the hack squat, there is a natural arch in my lower back. Do I want to flatten thought out?