A cup of Joe and you’re good to go (Under 6 a day and you’re A-OK)

Professor Elina Hyppönen of the University of South Australia:

Most people would agree that if you drink a lot of coffee, you might feel jittery, irritable or perhaps even nauseous — that’s because caffeine helps your body work faster and harder, but it is also likely to suggest that you may have reached your limit for the time being.

It’s 2 a day for me, any more and I go into overdrive.

Roberto Mateu @roberto