90/90 Hamstring Images
![image](https://www.bodybuilding.com/exercises/exerciseImages/sequences/578/Male/l/578_1.jpg)
![image](https://www.bodybuilding.com/exercises/exerciseImages/sequences/578/Male/l/578_2.jpg)
90/90 Hamstring Instructions
![90/90 Hamstring muscle diagram](https://artifacts.bbcomcdn.com/@bbcom/exercises-app/2.1.2/img/guide-8.gif)
- Lie on your back, with one leg extended straight out.
- 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.
- Extend your leg straight into the air, pausing briefly at the top. Return the leg to the starting position.
- Repeat for 10-20 repetitions, and then switch to the other leg.