This is Day 15... next week is a "rest week," but that just means I get to do yoga twice, core synergistics (sounds scary... I'm sure it is..), and legs and back. Considering I did yoga last night and feel like I've been punched all over today as a result, I'm not sure how rest-y this so-called "rest week" will be!
I'm not seeing any results yet on the scale (actually I gained 2 lbs...grrr). But people on the p90x forums say that sometimes you gain a little weight in the first 30 days while you build muscle, and then weight starts to come off. I'm trying to remain optimistic. My arms look a little stronger than before, but it's really subtle... no one would notice but me.
The main thing is... yay look at me, I'm sticking with something! I haven't had much workout tenacity in awhile...15 days is a pretty good success streak.