Here’s what you may not know: There are prime times during your day to drink coffee to get the best effects, and those times aren't necessarily first thing in the morning.
If you’re drinking coffee during that timeframe, you’re drinking it at a time when you’re already naturally at your maximum level of alertness.
Drinking coffee during your natural cortisol peak can cause you to develop a tolerance to caffeine.
“In other words, the same cup of morning coffee will become less effective,” Miller said.
Even if coffee is the first thing you want to taste in the morning, if you’re using it for a pick-me-up, it might behoove you to try waiting a little while.