You should never drink coffee immediately after waking up, because your body is already producing natural cortisol – and adding caffeine on top of that is a big mistake.
We all know that moment: groggy and half-asleep, you stumble toward the kitchen, searching for your first cup of coffee like your life depends on it. But here’s the surprise – you might be drinking it too early.
Before you even open your eyes, your body starts releasing cortisol – a natural hormone that helps wake you up. Cortisol levels peak 30 to 60 minutes after waking. If you drink coffee during this time, you're adding caffeine to an already stimulated system. The result? You may experience jitteriness, anxiety, and a reduced sensitivity to caffeine over time.
This is why many people feel an energy "crash" around 10 a.m. – the coffee kicked in too early, and now you're running on empty.
So, when is the best time for that first cup?
Ideally, wait 60 to 90 minutes after waking. That’s when cortisol levels start to drop and adenosine – the hormone responsible for sleepiness – begins to build up again. If you're up at the crack of dawn for a workout, coffee beforehand can help – but only if you’re well rested. Be mindful of the amount; often, even half a cup is enough.
And one more thing: avoid drinking coffee after 2 p.m.
Caffeine can stay in your system for up to six hours. That afternoon cup might be quietly sabotaging your sleep – even if you don’t notice it right away.