It's also absolutely amazing for mental health. It's a shame it isn't considered a first line of treatment for mental health because it's super effective (and free).
Instead, people try to fix it with antidepressants, benzodiazepines or something else. It feels a bit like the US approach to pain management – instead of massages or physical therapy, some opioid pill is cheaper to prescribe.
For most folks, that connection doesn't exist. Hell, I work out 3x a week and even I don't notice the obvious side-effects even though I'm certain they exist.
When we're dealing with ordinary people living their daily lives, the idea that something so "non-mental" - in the most literal sense "physical" can have an effect on the mental, is a really tough thing to swallow, understand and hell, even percept when things are going well?
Sorry. But I'm an avid gym-goer and even I have to remind myself of the positive it's doing. We're not all the same.