PowerLung is for anyone who breathes. It does what exercises or other products can not do for the muscles that support your breathing. You won't believe the difference PowerLung can make for you, regardless of your current breathing condition, until you feel it for yourself! PowerLung is an easy to use, hand-held product proven by independent studies to increase lung capacity and improve your breathing so you can race faster, dive deeper, perform longer, exercise easier, and, overall, breathe better.