Some of the more well-known Yoga poses that stretch the hamstrings are standing forward fold and seated forward fold. Additionally, many of the core movements of the Sun Salutation help to keep the hamstrings flexible and strong. Crescent Lunge into Forward Folding Hamstring Stretch and Parighasana or Gate Pose are wonderful Yoga asanas that deeply elongate the hamstrings. Parighasana also stretches out your oblique torso muscles, shoulders, chest and calf muscles. It is a great Yoga pose for runners, snowboarders and skiers.