In our modern world we rarely put our joints through their full range of motion. Practice this movement to help maintain healthy hip joints.
Everything You Need to Know About Barefoot Training - Muscle & Fitness
The Overhead Squat - Invictus Fitness
Hip Pain After Squats: Signs, Stretches, and More - Inspire US
Fixing Hip Pain During Squats - The Barbell Physio
Tight Glute Stretches for Stiff Hips & Squat Struggles - Precision Movement
Articles up to March 19th, 2013
Why do Americans squat on their toes? - Quora
How To Keep Your Hips & Knees Healthy At All Stages of Life
Here's The Key To Mastering The Deep Squat, by David Liira, Kin., In Fitness And In Health
How To: Improve Squat Depth - The Functional Movement Club Brookvale