W-extensions ( standing )

Muscles worked

You need

How to do it

1. Stand tall with both arms extended straight up overhead.
2. Pull your elbows down and back until your arms form a W, squeezing your shoulder blades together as if pinching a pencil between them, then press the arms back up to the full overhead reach.
3. Keep your ribs down and your torso still - the arms travel, the back squeezes, and nothing else volunteers.
4. Desk shoulders, meet your antidote.