<p>110 calories (8.3-ounce can)</p>
<p>76 mg caffeine</p>
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<p><b>Flavors:</b> Regular and sugar-free</p>
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<p><b>Claims:</b> Improves performance; increases concentration and reaction speed; increases endurance; stimulates metabolism</p>
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<p><b>Marisa Rosenbaum:</b> "It kind of tastes like carbonated cough syrup, but definitely does the trick. Just swig the small can down and you immediately feel awake again. I prefer the sugar-free because it's only 10 calories. The downside is you feel your heart beating a little faster and it can be hard to sit still."</p>
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<p><b>Samantha Cassetty:</b> "[Energy] drinks are laced with caffeine, which has been proven to help people stay more alert. The problem is that many of these drinks are also loaded with added sugar and, therefore, calories! Plus, too much caffeine can increase your heart rate and blood pressure, especially if you suffer from anxiety or hypertension."</p>