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Beginning (gram on left) – Don’t use dumbbells. Lay on belly with legs on the ground and arms up by your ears. Lift upper body and open arms up and out towards bum, then return to arms by your ears.

Intermediate (mom in middle) – Don’t use dumbbells or use super light weights. Lift both arms and legs off ground each time you open your arms.

Advanced (me on right) – While using dumbbells, lift arms and legs off the entire time you’re doing the exercise.