Rarely if hardely ever. Despite my totally not healthy sleep schedule, for the most part unless I'm sick, just coming off a break (like today), or stayed up way later than usual (like I did back a few months ago), I'm not prone to falling asleep or snoozing randomly. However, in the three aforementioned cases, it tends to happen. I'll usually fall asleep in one or more of my first three periods if I'm sick or stayed up late. If we just came off break, I'll start to snooze during fifth period or right after we get out of school. I actually took a nap on the way home today I was so tired. Other than I really don't just fall asleep randomly.