Slept on the floor...

I woke up this morning too early around exactly 4:00AM. I noticed that light down stairs is still open. I went down to check and found out that my son is still doing his projects. Ohhh...He didnt sleep yet. He finished at 5:30 AM. He must go to school at 8:00 AM. He prefer to just lie down on the floor of his room. He don't want to sleep in his bed , he might get a deep sleep and can't stand if i"ll woke him up at 7:00 AM.