Tokyo gym with day passes

Hi, I live in Tsukishima (Chuo-ku) and I was wondering if anyone knows of any gyms around here, where you can get affordable day passes. The gyms that I know about closest to where I live are really expensive and I simply don't go open enough to justify spending that much. Not to mention I will have times I am travelling or get too busy and think it is so wasteful to pay for gyms at times that I dont go at all.

by Wendygottschalck