No, well partially true.  Researchers used to believe that any amount of caffeine will act as a diuretic and dehydrate you.   Recent studies have found this to not be true as long as you drink less than 500 milligrams (five cups of coffee) daily. Drinking more than 500-600 milligrams daily might lower your body temperature, make you edgy, anxious and give you a faster beating heart creating restlessness.   Caffeine can take up to 8 hours to be removed from your system so those folks that are affected by it should plan accordingly if they want to get a good night sleep. … [Read more...]