This topic reminds me of a special pharse :sleep debt. As adults, we need to sleep for 8 hours at least daily, but some of us only sleep under 6 hours a day which makes a sleep debt. As a debt, it needs us to pay back. If not, some diseases will visit you and make your life worse. The best way of reducing sleep debts is not to create any sleep debts. So, having a great sleep every day is necessary for everyone. Some people get into a bad habit of staying later every night which causes them feel tired next mroning. In that case, go to bed earlier can help them keep a good physical condition. But many of them can't fall asleep easily before 10 PM. They are lying and moving on bed back and forth which just likes a ball rolling on the ground. Maybe taking some exercise before bed can help them. Overall, try your best to avoid creating any sleep debts. Taking a nap in your office can also be a great choice. You should be good at managing your time every day.