"I used one 3rd year to take all the classes. I physically aged myself almost an entire year, and never really could catch up on sleep. When you are awake for thirty-two hours eight hours is not enough sleep. I slept for four days at one point, and even then still had fatigue for weeks." They stared at her blankly. "And besides, most of the time turners were destroyed when we raided the Department of Mysteries 5th year."