But is that too much? First the good news. It's almost impossible to overdose on coffee. There is a lethal dose of caffeine but it's somewhere around 10 grams and the average cup of Joe has around ...

But like any other drug, caffeine can become addictive, and eating or drinking too much can cause negative side-effects. What is Insomnia? Causes, prevention, and what to do when you can't fall ...