Moving our clocks in either direction changes the principal time cue (light) for setting and resetting our 24-hour natural cycle, or circadian rhythm. In doing so, our internal clock becomes out of sync or mismatched with our current day-night cycle. A rule of thumb is that it takes about one day to adjust for each hour of time change, but this varies by individual.
If you are sleep-deprived already . . . you’re probably in a bit of trouble, especially if you consume alcohol or caffeine close to bedtime.
Source: WebMD. Link.
Also see: How to get through a day on no sleep, BETTER, February 23, 2019. Link.Wendy Rose Gould shares these tips:
- Sit by a window or step outside
- Resist sugar, carbs and processed foods
- Prioritize balanced meals and snacks
- Don’t skip meals
- Power nap, if you must
- Stay active
- Caffeine is ok, but don’t overdo it