Caffeine is the most popular mood-altering drug in the world, even those who use it daily, by drinking coffee, tea, sodas or energy drinks as part of their routine. In moderate amounts, caffeine has been shown to have positive effects on people’s bodies and minds. There’s some evidence that caffeine may help improve memory, enhance workouts and boost concentration. Some people are highly sensitive to caffeine’s effects. Caffeine can lead to headaches or an upset stomach, and may cause people to have trouble sleeping. Here are 9 interesting caffeine facts that you may don’t know about .
#1. Caffeine stays in the body for hours
Caffeine is absorbed into the blood and tissues within about 45 minutes of being consumed. But it takes much longer than that for the body to break it down and clear it from a person’s system. The half-life of caffeine, or the time it takes to eliminate one-half of the caffeine people have in their bodies, is about 4 hours.