Cut caffeine after early afternoon and limit alcohol

Stop consuming caffeine by 2 PM (or at least 8 hours before bedtime) and avoid alcohol within 3 hours of sleep. Both substances significantly disrupt sleep architecture even when they do not prevent you from falling asleep.

Why It Works

Caffeine blocks adenosine receptors in the brain. Adenosine is the compound that builds up during waking hours and creates sleep pressure. Caffeine has a half-life of 5-6 hours, meaning half the caffeine from a 2 PM coffee is still active at 8 PM. Alcohol initially acts as a sedative but causes fragmented sleep in the second half of the night by disrupting REM sleep and increasing nighttime awakenings. The Sleep Foundation notes that even moderate alcohol consumption reduces sleep quality.

Tips

• Watch for hidden caffeine in chocolate, tea, soft drinks, and some medications
• Decaf coffee still contains 2-15 mg of caffeine per cup
• If you rely on caffeine to function, poor sleep may be the root cause worth addressing
• Herbal teas like chamomile or valerian root are caffeine-free evening alternatives