We all need that jolt of caffeine that you get from a good cup of coffee in the morning. But many times, during the day, the urge for a nice cup of tasty coffee hits, and of course we frequently like a relaxing cup after dinner. Some people can't drink coffee at night because the caffeine keeps them awake, and for others it is worth having, even if they are going to be tossing and turning and staring at the clock.