Yeah, it's called "not starving anymore".

Sounds like MDMA, your reward system went wild

I got this during COVID after I started taking supplements (needed iron, vitamin d, b12), and biking. The second day when the nutrients took effect and I biked for a while, I ate some whole grains and took a poop any everything was wonderful. I stretched, slept well, everything. Take care of your body and it takes care of you (how it should be anyway, bodies may vary).

I got a similar feeling when I started taking the supplements my body needed: Iron, magnesium, selenium. I thought: wow! Is this how normal people feel on a day to day basis? It made such a difference in my mood too.

I get this feeling after a nice poop sometimes.

I think its just your body telling you that you did good/it now has the supplies it needs to do its job. It probably has to do with relative reactance to stimulus. If you go a long time without any of a specific stimulus, you're more likely to be highly sensitive to it. In this case it was your whole body becuase you gave it what it needs.

I’ve gotten a milder version of this when doing a very intense physical job day after day and then eating a huge dinner at the end and replenishing all nutrients. I called it “the belly orgasm.”

I’m just guessing / triangulating that what you experienced is further down the same road but to me it makes sense. The body in survival mode behaves very differently to the body in “everything on my end is all good, no real feedback, brain’s in charge currently” mode.

Are you sure you didn't take any drugs accidentally?

Anyway, considering you didn't take drugs, this is not normal. Consider consulting with a medic to investigate further.

That's your body starting to eat itself. Get some food.

No....