The inability to sleep past 12:00 is actually very common in clinical practice, and there are many patients who sleep irregularly, sometimes at 10:00 every night and sometimes past 12:00. Sleep rhythms follow a 24-hour circadian rhythm and the body will have a default biological clock. If you don’t go to bed on time and repeatedly change the time you go to bed with the lights out, your body’s biological clock rhythm will be disrupted. For example, after the normal biological clock, you will not be able to fall asleep. It is recommended that you should develop regular habits, go to bed on time, turn off the lights on time, get up on time, even when resting, it is not recommended to sleep to break the normal circadian rhythm.