Why should we delay coffee in the mornings

Delaying morning coffee gives your body time to build natural wakefulness before caffeine, and may help prevent an afternoon energy crash and protect sleep. 1

• Cortisol and adenosine: Cortisol normally rises near waking and supports alertness. Caffeine blocks adenosine receptors, but doesn’t clear the adenosine; taking it immediately may interfere with the natural process that clears residual adenosine. 2 3
• Wait 90–120 minutes: Huberman recommends waiting this long after waking. Many people report steadier energy and less of an afternoon crash, so they’re less likely to reach for more caffeine later. 4 5
• Support natural alertness: Letting morning wakefulness processes take effect before caffeine may help you feel alert and focused without relying on coffee immediately upon waking. 6
• Protect sleep: Caffeine later in the day can disrupt sleep quality, even if you still fall asleep; avoiding the afternoon caffeine cycle can help preserve sleep. 7