I was diagnosed as a teenager and prescribed Zoloft. I hated the medication because intrusive thoughts would spiral from “what if I jumped infront of this car” to “what if I locked the doors of this grocery store and set it ablaze”. So I stopped taking it and got fat.

As for high intensity, I’m sure that my use of the term isn’t correct, but I do something that raises my heart to 165+ for 30 seconds, keep my heart at 130, do something to spike it after 5 minutes and repeat until tired. I’ve been able to recently accomplish this reliably on an elliptical at the highest resistance level and maintain activity for 60 to 90 minutes.

After longer sessions I feel pretty good and sometimes a bit euphoric.