This has not happened to me, I try to register in the extreme tournaments, realizing that I will definitely endure to the end. As for me, you shouldn't register for a tournament if you are in a sleepy state, it may be difficult for decision-making.
Yes, I had it. I got a good result once. Took 3rd place at MTT and won his biggest prize of $ 800. I didn't want to participate, but I paid $ 2.20 or something like this amount I don't remember and somehow the game started. I could have won this tournament, but I dropped To 9 on the flop. Because turn to river 9 I would have become the chip leader by a huge margin. I invested a lot of chips there were still 7 players with me. This hand involved the three players with the highest number of chips. Then I just sat down to 3 places.
We all live in different countries and different times. Of course it happens, but it's a very shame when you have a very good game, a lot of chips and a chance to fight for victory, but you fall asleep) I think a good advice to avoid this is not to play in a bad (but very comfortable position - lying down) or when you don't have enough light. I can recommend drinking a lot of water, but not coffee or energetics why kill your health? Lol poker is just a game, but sometimes for good money )) pause every 15 minutes. You can do light sports or open the window, but you need to wear warm clothes
Once I fell asleep during a night tournament right at the computer, but I was awakened by a signal that my time in the time bank was coming to an end. Since then I try not to fall asleep while playing.
I had this when I fell asleep during a break in the tournament, sometimes I fell asleep during the tournament, I also wrote about it in a separate topic. You need to plan your day so that you don't want to sleep at night, but I don't know yet )), there are still times when you want to sleep very much at night during the tournament.
A lot of tourney play, especially short stacked, is basically autopilot preflop. It's also really annoying if you're just card dead for a long long time. Especially in the late stages of a tourney a lot of the time you'll open and everyone just folds 7/10 times. So yes for this reason I often pay very little attention for stretches of most tourneys