P90X is a set of 12 high-intensity online workouts that you do over the course of 90 days. You've probably seen the infomercials about it on TV. You'll commit to working out 6-7 days per week, for 1-1 ...

P90X Stretch X, the stretch routine included in the popular at-home fitness program, may provide much-needed relief after completing the brands intense cardio and strength training workouts. Its ...