Pro tip: the 30 day notice in my gym contract was buried in a section called 'General Terms' and I almost signed it | Contract Clause Check - Freelance Forum - The Community for Independent Professionals
Buried in general terms is literally where every contract puts stuff like this though, thats kinda the point of that section. You are signing a legal paper, so its on you to read the whole thing before your name goes on it. Blaming the gym for your own skim is a bit much when they did put it in writing.