To add to this discussion as someone who had above experience this winter, after (literally) years of mood fluctuations, fatigue and brain fog.

I have started taking SSRI after a harder-than-usual body collapse, and after no matter what I did my mood hasn't improved for a month. Regular running, meditating, writing, crafting, coding etc were my antidote to my mood swings but this time it didn't work. Started taking SSRI and continue doing all this things, and I was reborn.

My therapist said that a big chunk of why i am feeling better is also because I kept doing things that are good for me. That she sees with a lot of her patients that they think a pill will magically change the situation. It doesn't work on itself, you need to show up and do things that release serotonin in your body.

But seriously, unbelievable, years of frustration and friction in my life disappeared and I have never felt better.

Why were you getting body collapses?