[quote=Sharla;709999]The powerbreathe is supposed to make your inspiratory muscles work harder - which I'm guessing is the diaphragm.

I bought one on Ebay.

It is actually really hard! I'm on close to the lowest setting! At the moment I can say I'm not feeling aerobicaly weak running etc either but it is really hard work using this thing! I think I have to get into the habit of using it more because I'm meant to be using it twice a day but I forget. Need to make it part of a stretching routine etc and make time for it.
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i just purchased a power breathe. I got the ironman version. It arrived 2 days ago, Ive only used it 3 times cant see any results but i think with time it will work.