Exactly what I mean Brian. Whatever it takes to make em use their muscles. Besides, just cruising around outside of the cage doesn't take up as much energy as during the pursuit and subduing of prey. Although, allowing your snake to climb and swim does use up a considerable amount of energy. Especially swimming.
The Herp Room
"The day I tried to live, I wallowed in the blood and mud with all the other pigs" - C. Cornell