There are two types of films - one made by the big-time producers, the other is low budget stuff made by some producers who make films for the heck of it, they complete their films for small amounts, sell it at low costs with almost no publicity.
At one time, whenever the hell it was, they wanted a character to come in and stir up the pot. They brought me in for 8-10 episodes and said we'll try it for that.
I've talked to some drummers who seem to have a very hard time staying in shape on the road, including some drummers touring with high-profile acts that don't have to live on fast food every night.