The squat is the most important exercise for improving joint mobility in the hips and knees, as well as promoting proper posture. During the squat, numerous muscles and joints are engaged simultaneously: from the thighs to the glutes and back, all the way to the shoulders and arms. It’s no wonder that professional weightlifters master this exercise perfectly. However, when you look around in gyms, you see many trainees—whether experienced or inexperienced—performing the squat with poor technique, even without weights. Former professional weightlifter Dr. Aaron Horschig, who perfected the squat movement pattern as an Olympic weightlifting participant, demonstrates how anyone can train pain-free, safely, and with perfect technique through small adjustments in body posture, while achieving maximum performance. Illustrated step-by-step instructions support this process.