Tony Horton’s favorite workout?
“Yoga X, because yoga saved my life, absolutely. It was the most important step in my process of learning about exercise. Yoga is the fountain of youth, there’s no question about it. It’s a monster. The reason yoga is in [P90X] is that it’s that thing you’re in fear of, to some level, be it patience or range of motion or balance or strength. It’s like running on your hands, you know. It’s just hard. But the idea here is to keep pushing.”

So try his routine today and see how it works for you!

Source: http://www.huffingtonpost.com/2013/09/12/tony-horton-p90x-yoga-breakfast_n_3902266.html