Cow Face Arms

How to do it

Sit or stand tall. Reach the right arm overhead, bend the right elbow, and let the right hand drop down behind the back between the shoulder blades. The left arm reaches behind the lower back, palm facing out, and walks up the spine toward the right hand. Try to clasp the fingers. If they don't meet — most people's don't — hold one end of a yoga strap, belt, or shirt with each hand and grip down toward the middle. Hold, then switch the cross.

Why it's good for runners

Most runners have one shoulder noticeably tighter than the other from years of running arm carriage, desk work, or sleeping on a preferred side. Cow Face Arms is the simplest asymmetric shoulder shape in the catalog — it puts the two sides on completely different ranges of motion at the same time, which is what makes the tighter side actually show up to work.

Common mistakes

Don't force the hands to clasp — that turns a shoulder stretch into a wrist or elbow strain. Use a strap. Don't arch the lower back to fake the reach behind you; keep ribs over hips. And don't expect both sides to feel the same — the asymmetry is the point.