Fly Like an Eagle
The spread-eagle jackknife works the abs and the hips. Most abs exercises try to take the hip flexors out of the equation so that the abs have to work without assistance. But ignoring the hip flexors can lead to injury if you lift heavy, run, or play sports. The spread-eagle jackknife allows you to strengthen both the abs and the hips without sacrificing development in either area.
How To Do It:
- Lie on your back on the floor with your legs spread to form a V Shape and your arms extended behind your head.
- Sit up explosively while simultaneously raising your legs and hips off the floor. As you come up, reach your hands between your legs.