Getting in shape takes paying attention to science. This means having a theory, experimenting, observing results, and sticking to what works. Tim Ferris is the master of the method. He dives in and gets his hands dirty, trying supplements, changing routines, writing down the sets and reps, honing down his diet to the fat burning metabolic minimum. He's the grease monkey of fitness. To Ferris fitness is a serious business and he's not afraid to dirty his hands.