Is your morning caffeine keeping you up at night? It could be. Caffeine is a stimulant drug that stays in your body a lot longer than you might feel the effects.
Scientists use a term called “half-life” to measure how quickly caffeine is broken down by the liver and then eliminated from the body. The average half-life for caffeine is four to six hours. Pregnant women have a longer half-life – as much as 24 hours.
Watch this short 50-second video to see how quickly your caffeine leaves your bloodstream. It will give you a good idea about whether or not your caffeine intake is too much for you.