Unfortunately, Pattaya doesn't have any cheap gyms. They start at 120 Baht for a day pass ,and go way up .
I spend most of my time in Vietnam now, where the gyms cost a fraction of that.
Sun Fitness on Soi Buakao has aircon and Treadmills facing the road and the market, but don't think they have TV.Bring your smartphone or tablet for entertainment. It's 120 Baht a day, 990 a month. You would have to get up the stairs though.
The reopened Tony gym at intersection of South Pat road /3rd requires no climbing, is the same price, but very polluted air you are breathing there. Supposedly it's 24/7.
Kind of curious whether it's the same Tony. The old Tony closed down all his businesses, was gone for ages.Has he reappeared.?