Alwyn Cosgrove, co-author of The New Rules of Lifting, fought stage-four cancer twice, and won. He's also created one of the world's most successful gyms and fitness communities, Results Fitness. (Oh, and he's a Tae Kwon Do guy, like me. So, that's cool.) I brought Alywn on to ask him how he did it. From launching a successful (and, at the time, controversial) book franchise that made people think twice about "conventional cardio" to creating systems for a thriving fitness business, and more.