I don't know that this is something we can 100% get around with women.
@slesh knows my current situation very well but for the rest of the board me and my girlfriend of five years broke up in December. One of the things that became an issue over time was my bodybuilding. Initially she was very supportive but over time, particularly after her dad in early 2023 died out of nowhere, she turned against it.
The frustrating thing here is within the first month or two we were together I told her very clearly that I'm a bodybuilder, I take drugs, I spend time at the gym, I did it all before you and if you leave I'll still do it all. And she said ok, she was fine with it. Fast forward to last summer and she told me that she thought when I said that I wasn't serious. She said, word for word quoting here, she 'thought it was a phase I'd grow out of in a year or two'. Even though I said super clearly this is who I am and what I do.
Women love to assume and live in their fantasy worlds no matter what's going on around them. I don't know how men get around that.