Performing the: A Step-by-Step Tutorial Leg Up Hamstring Stretch
Keeping one leg straight on the floor, slowly lift your other leg, keeping it straight and stretching it towards the ceiling as far as comfortably possible.
Hold onto the back of your raised leg, either at the calf or thigh depending on your flexibility, and gently pull it towards you to deepen the stretch.
Hold this position for around 15-30 seconds, feeling a stretch in your hamstring.
Slowly lower your leg back to the floor and repeat the stretch with your other leg.