I only started going to the gym regularly like a month ago, but I already feel the effects of it on my mental health.
I've always had a low self esteem and never had confidence in myself. I was always unmotivated to do anything and would always procrastinate. I recognized my flaws but I hated myself because I couldn't "will" myself into instantly being good. I've seen myself as a failure constantly and was suicidal. And one day I just made myself go to the gym. I picked up a weight and copied what other people did, and used the machines randomly. I still do this to this day and I don't know if what I'm doing is working, but I stay there and use the machines for 2 hours every other day, and when I get back home and I come out of the shower I feel so much more alive. Like I'm starting fresh from a blank state. No depressive thoughts, no feeling worthless, none of that. All my motivation to do good comes back and I gain the willpower to actually make things happen. All because I went to the gym.
If you're reading this and you're depressed and don't work out, then go to the gym as soon as possible. Working out alone will make such a huge difference in your life, and all it takes is a couple of hours out of your day lifting weights.
Working out is the true redpill and key to happiness and success. Thank you IST.