Workout program P90X is a 12-week long home workout constructed by trainer Tony Horton.
The P90X program comes with a workout videos, as well as a training manual and schedules and nutrition plan. Because you are exercising in your home there is no need for expensive workout gear and equipment because for most of the workouts you will need only pullup bar and resistance bands or dumbbells.
Among these videos is the legs and back workout and it is a very important workout because back is your muscle core and you need strong legs because nobody want to see strong upper body and thin legs.
Also the legs and back workout develops the largest muscle groups, it’s one of the most common training sessions, so is included every Friday.
That means that it will be your fifth workout of the week and also third and final strength training workout of the week. So after this, all you have left for the week is Kenpo X, which is cardio workout also very important but a little easier.