Caffeine also doesn’t disappear from the body immediately.
Its effects can last for many hours, and sensitivity varies considerably from person to person.
You may drink coffee in the afternoon and still have enough caffeine in your system at bedtime to influence your sleep.
Some people are especially sensitive.
If you routinely wake during the night, experiment with moving caffeine earlier in the day rather than assuming your afternoon cup has no effect.
You don’t necessarily need to eliminate caffeine completely.
Timing may be the key.
8. Your Sleep Schedule May Be Irregular
The body tends to function better when sleep and wake times are relatively consistent.
If you go to bed at midnight on some nights, 2 A.M. on others, and 10 P.M. on weekends, your internal body clock may have difficulty maintaining a stable rhythm.
This can contribute to difficulties falling asleep and staying asleep.
People who work changing shifts or frequently travel across time zones can experience this even more strongly.
