1. The performance of this exercise is done by sitting in a normal situp position feet flat on ground but vigorously tightening hamstrings and glutes.
2. This will cause the hip flexors to be inactivated in a process called reciprocal inhibition which basically means that opposite muscles to the contracted ones will relax.
3. As you begin the exercise fill your lungs with air and in a slow three to five second count ascent, slowly exhale.
4. Return to the starting position and repeat.
