You Can Drink More Coffee Than You Think – Refinery29

It’s a good guideline. But no matter how much (or how little) you’ve consumed, if you experience side effects — such as feeling anxious, shaky, or wired — it’s a sign that you’ve overdone the caffeine. “Most people would agree that if you drink a lot of coffee, you might feel jittery, irritable or perhaps even nauseous,” Elina Hyppönen, PhD, author of the study, previously told ScienceDaily. “That’s because caffeine helps your body work faster and harder, but it’s also likely to suggest that you may have reached your limit for the time being.”