Stretch Armstrong

I did my first primary series astanga class today -- 90 minutes of flowing yoga, one posture after another. It wasn't as hard as I thought it would be and I can get into lotus position pretty easily. However it does NOT look like the pictures when I do it and there's still a lot I can't do at all.

For example, lift my butt up off the floor and hover it in the air while in lotus position.

It really felt exhilarating to take the class. I sweated a LOT, like so much that I was slipping on the mat towards the end, but I was really impressed with what I was able to do with my body.