PowerLung mentioned in #1 New York Times best-selling book, “The 4-Hour Body” by Tim Ferriss
PowerLung receives a nice mention in Tim Ferriss’ new #1 New York Times best-selling book, “The 4-Hour Body“. Check out the chapter entitled “How to hold your breath longer than Houdini” where Tim recommends PowerLung as a device to improve breathing endurance, to train around injuries, and more. He also says it’s good for travel,…