Side Jackknife

Level: beginner

Equipment: body only

Force: pull

Mechanic: compound

Core muscles: abdominals

Secondary muscle: none

Alternative exercises:

Lie flat on your back and bend your knees about 60 degrees. Keep your feet flat on the floor and place your...

Connect a standard handle attachment, and position the cable to a middle pulley position. Lie on a stabilit...

Lay on the ground on your back with your knees bent. Hold the ball with one hand, extending the arm fully b...