Texto en inglés. Tapa blanda de editorial ilustrada. Como nuevo. 'Explains the science of maximum effort, why the modern gym fails an obese society, and the psychic rewards of ending up on the floor feeling as though you're about to die, [tracing] CrossFit's rise from a single underground gym in Santa Cruz to its adoption as the workout of choice for elite special forces, firefighters, and cops, to its popularity as the go-to fitness routine for regular Joes and Janes'--Dust jacket flap.
