Why did you sleep from 12 until 6: 30? Do you work overtime? Or stay up late to study? Anyway, 12: 30 to 6: 30 is definitely not enough sleep time. And the next day should not be too good, it should be dizzy and tired. Actually, when I went to the hospital for consultation before, the doctor told me, well, it's best to go to bed at 0: 30/kloc-0, and then get up at 7: 00 the next day for breakfast. Some people get up late and skip breakfast, which is really bad and unhealthy. So if you can go to bed early, you must go to bed early and don't stay up late, which will cause many complications. If they can sleep at 10: 30 and get up at 7: 00, they will have plenty of time to sleep, they will have a lot of free time in a day, and they will feel that their life will become full. Maybe your 12 is noon or evening? Sleeping from noon 12 to 6: 30, as a lunch break, is too long for health. Sometimes, the more you sleep, the more sleepy you are, and the less energetic you are.