Nah, it’s those dang sleep disruptions when you have to get up to go to the bathroom in the middle of the night! Thankfully, I usually have no trouble getting back to sleep. ;o)
When I was a 20 something, an “All Nighter” meant I had partied all night. Now that I am 67, an “all nighter” means I did not get up to pee.
.....Bob