Be careful about the container you drink your coffee from. Plastic cups :arrow: may leach BPA and Styrofoam cups :arrow: may leach polystyrene molecules. Your best bets are glass, ceramic, or stainless steel coffee mugs.
You know, I remember having a microbiology teacher that said to never microwave anything with styrofoam, as it would give you cancer. Then I found out, 10 minutes later, he smoked.