Why did the Macho Man Randy Savage go from being in shape in 1990 to looking skinny and wearing his gear for several years?

I noticed this when Randy Savage was wrestling for several years he was ripped and in great physical condition until WrestleMania 7, after that he started to look skinny and had noticable lack of muscle.

Did he quit using steroids around that time? When he joined WCW he noticably looked in better again.