Back squat

- Bar on your upper-back muscles (not your neck), hands gripping firmly. - Brace your core, unrack, and step back. - Sit down and back, knees tracking over your toes, to at least parallel. - Drive up through your whole foot, chest staying tall.

- Knees caving inward. - Chest dropping (good-morning-ing the weight up). - Heels lifting or cutting depth short.