Powerbreathe
Oh, <sigh...> I tell so many people about the benefits of a simple daily 10-minute breathing practice . It helps calm the nervous system, help people better deal with pain, builds endurance, strengthens the heart, and has many medical benefits: how many people suffer from asthma, COPD and other breathing related disorders? It can be practiced anywhere, by anyone, without special equipment. And, best of all, it's free . Most of the time people nod and smile, and do nothing. I just discovered the Powerbreathe website. They have manufactured a device and devised a program that they claim helps improve lung capacity, with all the benefits I mentioned above. Please read all the convincing arguments on this site. And then know that these same results are possible without the device. No one has done the studies, because no one makes money from a simple breathing exercise, so I can't make any medical claim. However, martial artists, yogis, alternative health practitioners...