At 2 a.m. on November 5, clocks in most of the United States will “fall back” one hour, ending daylight saving time for the year.
So, if you usually go to bed at 10 p.m., then, after Sunday, you’ll technically be going to bed at 9 p.m. If you wait until it is 10 p.m. as per the new clock time, you would be up until 11 p.m. before you changed the clock, so you are staying up one hour later.
Some people may be happy because they are going to sleep an hour more, but this comes with certain side effects. The rest of the day will seem longer, which may make them feel as if they are stuck at work late – never a happy feeling – or they are waiting around longer for their favorite show to start.
The brain’s “central clock,” called the suprachiasmatic nucleus, or SCN, regulates our natural 24-hour cycle that controls body heat, hormone production and sleep patterns. SCN needs “hints” such as daylight to keep working properly. So, when these hints are altered, the rhythm changes too, causing a series of issues.
Moving the body’s inner clock in either direction causes it be out of sync or mismatched with a person’s existing day-night routine and habits. Adapting to this change depends on several factors.