I always add extra cardio when doing P90x classic. I wouldn't advise cutting the yoga though, it's fabulous. I usually just add an extra 1/2 hour on the treadmill a couple of times a week.
Sparrow
My garden is filled with papayas and mangos
My life is a mixture of reggaes and tangos
Taste for the good life, I can live it no other way
- Jimmy Buffett