Every year, the day after ship and the day after nationals, most team members coincidentally fell "ill" and weren't at school.
When I got home from nationals my freshman year, I went to bed at 7 pm and woke up at 9 feeling pretty refreshed. I wondered why, after two hours of sleep, I felt so good. I went to talk to my mom and I had completely slept through the next day- 26 hours!!