I googled ‘behind P90X‘ and got the breakdown of their program. Week 1-3 is as follows:

The classic P90x workout plan looks like this:
Weeks 1, 2, and 3
Day 1 – Chest and Back, plus Ab Ripper X
Day 2 – Plyometrics
Day 3 – Shoulders and Arms, Ab Ripper X
Day 4 – Yoga X
Day 5 – Legs and Back, Ab Ripper X
Day 6 – Kenpo X
Day 7 – Rest or X Stretch

And here would a Sanity FS approach to this schedule:

Day 1 – 50 push-ups, 100 push-ups (yes a 100 more), 50 push-ups mixed with knee tucks
Day 2 – Skip rope for 20 minutes
Day 3 – 50 DB Squat Thrusters (75 if your nasty)
Day 4 – Yoga with the opposite sex because it is WAY more FUN!
Day 5 – 50 Burpees, 50 Pull-ups
Day 6 – Watch some Bruce Lee flicks and try to use the nunchucks like him
Day 7 – Chill out, watch football, or go to the movies with whomever you did Yoga with

Now that is a damn good way to spend the week!
Stay tuned for weeks 2 and 3.

A Sanity approach to fitness,

Daniel J Sanidad