~36 hours. The last day of school in 8th grade, I got up around 6 and then went to a party right after that day. We stayed up all night, then went paintballing the next day. I didn't even feel tired until I got home (it was humid and 90+ degrees) and then, I just collapsed. Our air conditioning was broken too, so I kept waking up, bitching at my parents, then falling back asleep.