Too much of a good thing is bad for you. We all know that. You can overdose on anything. Literally anything. Chocolate, for example, is poisonous to every living animal on earth, even humans. If you managed to eat forty Dairy Milk bars (about 22 lbs of chocolate) you would suffer heart failure from theobromine poisoning. It is famously stated that if you landed on a desert island, you could survive, even thrive, only on c...