ESPThis Sunday, November 1, most Americans will turn their clocks back one hour as Daylight Saving Time comes to an end. While gaining an extra hour of sleep may sound appealing, our bodies don't necessarily adjust as quickly as our clocks. That’s because we all have an internal clock, known as our circadian rhythm, that helps regulate when we feel sleepy, hungry, alert and energetic. This natural 24-hour cycle is influenced primarily by sunlight and darkness.
When we change the clocks, even by just one hour, we temporarily change the relationship between our daily schedules and our body's natural rhythms. What does that mean for your health?
• Sleep patterns may change. You might wake up earlier than usual, have difficulty falling asleep or feel tired at unexpected times.
• Your energy may fluctuate. Changes in sleep and daylight exposure can temporarily affect alertness and concentration.
• Your appetite may feel different. Your internal clock helps regulate hunger and digestion, so mealtimes may feel a little out of sync.
• Your mood may be affected. Earlier sunsets, combined with the seasonal decline in daylight, can influence how some people feel emotionally.
Fortunately, most people adjust without significant problems. And unlike the spring transition, when we lose an hour, the fall change is generally easier on our sleep.
How can you prepare?
Start by keeping a consistent sleep schedule. In the days before the change, consider gradually shifting bedtime, wake-up time and meals about 15 minutes later. Spend some time outdoors during daylight hours and avoid staying up late simply because you know you'll gain an hour. Most importantly, pay attention to how you feel. Your body may need a few days to adjust.
