One of the most well-known exercises is the squat. The exercise comes in countless variations — think: back squat, front squat, sumo squat — and can be performed with a variety of workout equipment, ...

Add Yahoo as a preferred source to see more of our stories on Google. Erin Banks said he's recently made major lower body gains by using hack squats to build leg muscle.Courtesy of Celsius Elite ...

Bodybuilding legend and former four-time Mr. Olympia Jay Cutler broke down how to build bigger quads using the hack squat machine.

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