Why is my 5 month old ball python so active?

[MarkS]

I do not have a thermostate. Where can I get one? They don't seem to have them at the pet stores.

There are many places online, here is a place I like. The VE-200 is the model I prefer.
http://www.reptilebasics.com/thermostats

A cheaper option is the hydrofarm thermostats that you can get at Amazon.com

http://www.amazon.com/Hydrofarm-MTPR...ords=hydrofarm