Out of my ~ 50 snakes I have a few ball pythons that are much more active than most. I have a big female that has always been a mover, she did fine this season, laid a big clutch of eggs and was moving a lot before and after laying. I also have a couple males that tend to want to get out of the tubs. I think it just depends on their personality, perhaps someone had them out of their enclosure a lot when they were younger and they are used to being out and about. I used to think it was food or that they just wanted to get out and find a mate or maybe they were sick, but it seems to me like it's just their own unique personality. I check tubs twice a day and with these snakes I'll pick them up and hold them for a bit, seems to be what they really want.