DS2 has his first ever GCSE exam this morning. And at the same time, in the same hall, DS1 is doing an AS exam. So what am I doing on my day off?? Pacing the house, like an absolute loon!! 
DS1 was still revising at 2:30am. At 3am I went into his room to tell him to stop, only to discover he had fallen asleep on his bed, lights on, fully clothed, with headphones still in his ears blaring out music. He has AS exams on Monday, Tuesday, Wednesday and Friday this week. It's going to be a very long week.