The following exercise helps build strong, balanced leg muscles. Make sure to adjust exercise machines as instructed by your physical therapist. He or she will tell you how many times to do the exercise.
Note: To prevent injury, always warm up and stretch before your strengthening exercises. Stop any exercise that causes pain. Discuss it with your physical therapist or healthcare provider.
Here are the steps to hamstring curls:
Lying on your stomach, pull one leg up as far as you comfortably can.
Let your leg uncurl slowly and steadily.
Take care not to arch your back.