Hi everyone ! I had my cornsnake for about 10 years now, it never has problems shedding nor eating unfrozen mice. But everytime I touch it or picking it up it starts twitching ( like spasms and starts moving slowly with the spasms ). Never bitten me and I've had it since it was a hatchling. I'd just want to know what's causing this and if I should be worried about that. Once I pick it up it's all fine though. Thanks in advance 