Work toward touching your toes, release low back discomfort, and unwind hours spent sitting, running, or cycling with yoga for hamstrings classes. Build strength, stability, and flexibility with yoga practices specifically designed for your hammies. Hamstrings are often overlooked in non-yogic activities, creating tight and/or weak hamstrings. Tight hamstrings can pull on the muscles of the low back and create discomfort. Weak hamstrings can create imbalances in the lower joints of the body. The hamstrings are a group of muscles on the back of the legs including biceps femoris, semitendinosus, and semimembranosus. This group of muscles is what helps us run, walk, and squat... and tie our shoes. While much of yoga asana may seem focused on stretching the hamstrings, it is equally important to strengthen the hamstrings. Poses to strengthen hamstrings include bridge pose (setu bhandasana) and upward plank (purvottanasana).