Sumo Squat to Hamstring Stretch
Stand in a comfortable squat stance. Bend at the waist and grab your toes with a slight bend in your knees if necessary. Squat straight down and sink your hips as far as possible with your knees slightly pushing out. Maintaining hold of your toes, raise your hips and try to straighten your legs while keeping your back flat. Then, lower your hips back into the Sumo squat position and repeat for the prescribed number of reps.