The buzz about caffeine and sleep
To get better sleep, consume less caffeine and stop caffeine consumption earlier in the day. Caffeine is a stimulant and the more of it you consume and the later in the day you consume it, the more likely it becomes that it will interfere with your sleep.
When you drink a caffeinated beverage, the caffeine level in your body peaks 75 minutes later.
On average, you have half the caffeine from a cup of caffeine in your body five hours later.
If you consumed caffeine six hours before bedtime, it would reduce your sleep by about 40 minutes.
Taking caffeine late in the day can impact your natural circadian rhythms.
It can disrupt your ability to fall asleep and inhibit REM sleep which plays an important role in memory consolidation.
Want to learn more? Check out these studies.