Well, I tried to google this but the only thing I found was deleted. I actually didn't want to ask because I thought I was just being a worry wart, but now I'm thinking better safe than sorry.

From the beginning when I got my snake, the area where he breaths twitches. I wouldn't call them violent twitches but it's like if my eye were to twitch but with his stomach area.

He also kind of does this stop and go thing... where he'll be doing something then it almost looks like he kind of shuts down or just goes to sleep but then he quickly kind of seems "surprised" and jolts back up and gets back to business.

Both of these things are just while he's exploring his terrarium, not eating or anything special.

Are these things normal?