"Contrary to common belief, urine color is not a great sign of dehydration, says Rachel Vreeman, MD, a fellow in Children's Health Services Research at the Indiana University School of Medicine in Indianapolis." I don't get sick, because I drink plenty of delicious alcohol and germs rightfully fear me. But for humans, here are some handy tips for staying well so you don't end up looking like Moby. Do you really feed a fever and starve a cold? Is coffee bad for you?