Lie down on an exercise mat with your knees bent and arms at your sides.
Bring your legs up to tabletop one leg at a time, knees bent, thighs perpendicular to the floor. Maintain a neutral spine and avoid arching or pressing your back into the floor.
Begin by lowering the right foot and tapping it on the floor while the left leg remains in a tabletop position.
Return the right leg to the tabletop and repeat with the left leg.
Increasing the difficulty- Drop down both feet to the mat and return up - without losing contact between your lower back and the mat. Stretch your legs out more to increase the degree of difficulty.