One of the absolute best ways to zero in on the quads portion of the entire leg musculature for an unsurpassed growth stimulus is to start with a pre-exhaust exercise. Essentially, that means flipping your workout: doing your single-joint movement (leg extensions) before the heavy, multi-joint ones. Big Ron Partlow teams up with Johnnie Jackson demonstrating its effectiveness in this hardcore MUTANT video. Besides making your quads work far harder, the prefatigue makes every compound movement that follows even more challenging, which also allows you back off the weight (it still feels heavy!) and save your joints. The MUTANTS also offer some key leg-training advice along the way. What are some of YOUR best QUAD training tips?