It was a pleasure to talk with Dr Mark Cheng on my podcast today (The Strenuous Life Podcast). Mark is a lifelong Tai Chi practitioner who was featured in Tim Ferris's 4 Hour Body book and created the Tai Chen warmup and movement awareness training training for the P90X people.  But he's also done a TON of training in reality-based, pressure-tested martial arts, which gives … [Read more...]