Your kids may think it's cool to knock back a Red Bull, but are there risks? You bet. Just one energy drink can give them a caffeine boost in the 100-milligram range -- nearly half of the daily recommended amount for adults. Too much of this stimulant can lead to abnormal sleep patterns -- if it doesn't keep your child from sleeping at all. Plus, some energy drinks often contain another stimulant called ma huang, which is a form of ephedrine. When the rush finally wears off, all this artificial energy may affect the body's ability to make its own natural energy chemicals. But energy drinks aren't the only method of caffeine delivery you have to worry about. Find out why in the next section.