I worked at this gym for a total of 3 weeks.
While I was there, I had two male coworkers approach me with romantic/sexual interest. One, who learned I'm a lesbian via my instagram proceeded to message me about "how long" I have been gay for. Thankfully, he dropped it after two days.
The other coworker harassed me multiple times, saying he would "satisfy" me after my hypothetical wife failed to, that he was going to marry me, and that he loved me, and made comments about my butt. He even did this in front of a friend of his (who also made a comment about me). I finally told him off and he got upset/confused at my level of anger.
When I quit, I detailed the harassment in my resignation letter, but because no coworker had witnessed/overheard his harassment, there wasn't anything they could do about it.