How to do 90/90 Hamstring

How to do it

1. 1

   Lie on your back, with one leg extended straight out.

2. 2

   With the other leg, bend the hip and knee to 90 degrees. You may brace your leg with your hands if necessary. This will be your starting position.

3. 3

   Extend your leg straight into the air, pausing briefly at the top. Return the leg to the starting position.

4. 4

   Repeat for 10-20 repetitions, and then switch to the other leg.