Isometric abdominal flexion, shoulder extension in supine - bilateral knees bent (Core/abdominal strengthening, pushing into stability ball, both arms, supine feet standing)

Isometric abdominal flexion, shoulder extension in supine - bilateral knees bent (Core/abdominal strengthening, pushing into stability ball, both arms, supine feet standing)

Lie on your back with your knees bent and feet flat on the floor.
Position a stability ball on your thighs and place both hands on the ball.
With your arms straight, press your hands into the ball.
You should feel both your abdominal muscles and the muscles around your chest and sides tense.
Hold this position.
Relax, and repeat.

Required equipment: Stability Ball, Mat, Ball - large
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