I did half of X Stretch, but my knee was aching and locking....which as you know if you do P90X puts a wrench in a lot of moves. SO, I decided, like a bolt of lightening hitting me...that I could do my inversion table...that it might release my knee. So I quit half way, and I went for that. I hung about 4 times, the last one being completely vertical, and I felt my ankle and knee release. So far, it feels ok. I'm going to use that now, every night, and hopefully, I can get this knee to start behaving.
Tomorrow...Week 9, Phase 3! Bring it!