You should do this exercise lying down. A good place to do this exercise is on your bed.
Rolling the knees from
one side and to the other is one repetition. Begin lying down with your knees pointing towards the ceiling. Slowly roll your knees to the right. Hold for a few seconds and then raise the knees so that they are pointing towards the ceiling again. Repeat on the opposite side
you should do this exercise lying down. A good place to do this exercise is on your bed.
Tilting the hips up and down is one repetition. Lying on your back, place both hands on your hips.