I don't like how people say exploring = stressed, there is a big difference between exploring and trying to escape. I have quite a few snakes who will just explore, they just check things out and do what snakes do, you can just see in their movements there no stress.
When their trying to escape means stress, they will look like their checking things out, but when they find a place to hide, they dive right in it. I notice their movements are faster, more "jerky" i guess id call it. its pretty easy to see their not comfortable.
how old is your bp?