Bend over from waist, dumbbells slightly forward, soften legs.
Keeping forward, bring dumbbells up until they touch side of waist then lower slowly.
Again, bending forward, let bar or brush handle fall forward, widen grip
Keeping head up bring bar into chest and lower slowly. Be careful of lower back.
Lying forward on ball, arms extended, relax shoulders.
Bring bar up towards chin, flexing arms as you raise bar.