Lie on your back with your knees bent and your feet flat on the floor.
Put your fingers on your hip bones.
Engage your core muscles.
Imagine you are gently drawing your hips into their sockets then drawing the two hip bones together as though you are making a “U” across the front.
Or imagine that your heels are resting on eggshells and you are trying to slightly take the pressure off the eggshells one heel at a time.
As you do this, you should feel your bottom muscles tense gently, do not squeeze these muscles forcefully.
Try to keep your legs as relaxed, and hold this position.