10 Work Snacks That Are Making You Sleepy (Slideshow)

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Power Bars

Not all power bars are created equal. Many are full of sugar and artificial sweeteners, explained Decotiis. While many advertise that they keep you energized for a long period of time, they actually do the exact opposite. The abundance of sugar will eventually spike your insulin. Unless you’re planning to run 10 miles after work, avoid the power bars during the day.