A while back I heard an expression that goes something like this:
Exercise is the best therapy that we don't want; and nutrition is the best prescription we don't want to fill.
I often say with a smile, but never joking, that "training is cheaper than therapy"; I've done the math. There are quite a few studies out there on the benefits of training on mental health; particularly when training is used alongside other therapeutic plans. I'll link some of those research studies below if you feel like nerding out like I often do.
Training has been shown to: - alleviate stress - reduce frustration - improve self-esteem - increase focus - release "feel-good" chemicals
While the studies show a benefit, my n=1 study confirms the findings. I've got a long-standing battle with depression myself, and training regularly is actually part of my treatment plan. The community. The sweat. The challenge. The encouragement. They all help produce feelings and hormones which help "steady the ship."
Of course, I'm not a doctor and will not give medical advice; I can only share what I've learned along my journey.
Be blessed! (oh...studies linked below:-) Sensei Bob