Tag: Substitute for P90X Yoga X

So I was doing some fitness reading the other day and I came across an interesting story or two.  One one them I want to share with you now since if I have never heard of this and I am pretty...

So you are doing the classic version of P90X and you just finished up day 4, P90X Yoga X and you are wondering if you really have to do it or can you substitute it with something else?  First off let...