How You Breathe Out · Lungs
Extra muscles join in when you're pushing hard.
Sprint up a flight of stairs and breathing stops being effortless. Now your abdominal muscles squeeze air out, your neck and shoulder muscles help haul your ribs up, and every breath is deliberate work.
There's more: extra muscles join in when you're pushing hard. The full explanation — and the interactive version you can tap and quiz yourself on — lives in the app.
Body Atlas is an educational product. It does not provide diagnosis, treatment, or personal medical advice. · Privacy