Falcon, u should build ur self a big hamster wheel in ur back yard and walk on it. Not too intensely. Then fill a big water cooler bottle up, put a hole in a piece of cork, push a round steel pipe thru it, pop this in the spout, turn it upside down n hang it from a nearby tree. Get a clothes basket n put ur gerbil food in it. Nibble occasionally then take huge gulps from ur water dispenser. Throw some cedar chips on your lawn n rest between workouts. Then get ur self a big round clear plastic sphere n roll back n forth to work in it.