The plank strengthens the abdominals, back, and shoulders.

Then, while holding the jars, the practitioner moves in varying stances, in order to strengthen the arms, shoulders, back, and legs.

The heavy work stirring the iron was said to have strengthened his arms and shoulders.

"Because you want me to strengthen my arms and shoulders," she said immediately.

I expect that, with enough practice and some weight training to strengthen my arms and shoulders, I could learn the technique well enough to avoid humiliation.

Push-ups strengthen the chest, shoulders, triceps, and core muscles.

Skipping also helps strengthen the arms and shoulders.

The asana strengthens the back, shoulders, and hips.

Strengthening the arms and shoulders and increasing vitamin B6 intake may also help.

Why it's a winner: Push-ups strengthen the chest, shoulders, triceps, and core muscles.