Most Marines think the way to run faster is to run more. Grant Broggi explains why that's backwards — and how getting your squat from 100 to 200 pounds is the single best thing you can do for your three-mile time. He breaks down the force production equation, his own PFT run prep (once a week, all year), and exactly how to phase in running without destroying your recovery. If you've been grinding miles and your time isn't moving, this is why.