I tried the P90X yoga routine that comes with the P90X workout program. This was the most strenuous yoga I have ever tried. I was huffing and puffing in no time. I had no idea that yoga could be such hard work. When I was done, my body was exhausted but I felt well stretched. This was a great workout!

I haven't yet started the full P90X workout program. I still prefer to workout outside while the weather is still bearable. Come winter I'll buckle down to the program a little better. But the individual programs are proving to be great to do on rainy days when I don't want to go outside or don't want to go to the gym.