Caffeine is generally safe to drink up to 400 milligrams a day, according to the Food and Drug Administration (FDA). That's equivalent to about four or five cups of coffee. For the average person, ...

Coffee beans naturally contain caffeine, a stimulant that many use to combat fatigue. In order to create decaffeinated coffee, the caffeine must be removed from the bean using a chemical process. Many ...

Few choices feel as critical as the one concerning what beverage to consume at 2 p.m., a time of day when ordering cold brew feels a bit like playing Russian roulette with my sleep schedule, but going ...