The Caffeine Cutoff

Why Coffee After Noon Is Wrecking Your Sleep

Most people think their sleep problem starts at night. It doesn’t. It starts at 2pm… when you grab that second (or third) coffee. Here’s what’s actually happening: Caffeine has about a 5-hour half-life. So that afternoon coffee? It’s still in your system well into the evening. And it’s doing more than “keeping you awake.” It’s blocking adenosine — the chemical your body builds all day to create sleep pressure. No adenosine = no real signal to sleep. So now:

• • You don’t feel tired when you should

• • You push your bedtime later

• • You fall asleep slower

• You get lower quality sleep

Then you wake up tired… And the cycle repeats. More coffee. Worse sleep. Lower energy. Most people try to fix sleep with supplements, routines, or hacks at night. But the real problem? You’re disrupting sleep all afternoon. Jump on our email list or comment below to get the fix for this and other sleep issues.