Setup:

Lie prone on mat. Place hands on mat under shoulders and legs together with feet on the bosu.

Instructions:

Raise body upward by straightening body in straight line between ankles, knees, hips and shoulders. Raise one leg, knee extended, until foot is above hip height, hold for 2 count, then return foot to mat. Raise other leg, hold, then return. Repeat.

Tips:

Muscles are exercised isometrically. Keep hips level throughout hold, do not rotate to help.

Supporting Muscles:

Lower Back, Abs