Did it ever happen to you? I've been smoking for half a year non stop now, over a gram per day, sometimes more. Yesterday I've rolled a fat one and went to smoke it in bathroom with friend. After a while it started overwhelming me. I did shitload of psychedelics during my run so I wasn't worried too much, tried to calm myself, but nothing was helping, it was getting heavier, my heart was speeding up. I told my friend that I wanna get out, but before he managed to move and make space to leave I've passed out. I remember sitting on a toilet and loosing it. Then I heard some noises and next thing I know I'm laying in the shower, friend asking if I'm ok... I've passed out before for no reason, maybe year or two before, wasn't smoking back then. Lack of oxygen + low blood sugar because of not eating + not enough sleep?