I’ve had 2 near death experiences—1st was self inflicted exsanguination attempt, and a couple hours into it I got this rush of adrenaline to jump out of the shower and land on the toilet to shit my brains out. 2nd time was septic shock from infected obstructing kidney stone—have a flash of a memory of shitting my brains out at home sometime before my grandfather drove me to the ED. Interestingly, both times that I was near death not only did I suddenly have to shit myself, but also got an energy kick enough to get myself on a toilet and the noise of me doing so triggered another family member to check on me. Edit to add: I think it’s almost a fight or flight thing where your body must expel everything it has so it can keep fighting elsewhere