5

For those who can devote two plus hours to working out, both workouts will fit into your time schedule. In fact, both programs have long and short workout days. However, because strength training may require more time to work up to a certain number of reps, P90X may be more of a time commitment than Insanity. Some Insanity workouts are only 30 to 40 minutes of hard core cardio, whereas the shortest workout in P90X is 40 to 45 minutes. Both also offer an ab option. On days you are supposed to do a regular workout with abs (20 minutes or less commitment), you can skip the ab workout or do it later if you have time constraints.