You need to be awake, but a major caffeine addiction mostly fast tracks your way to the grave. Kevin Daum writes for Inc. with all the ways you can keep your pep without crashing.
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Fifteen minutes outside will charge your batteries a little, regardless of weather. A bit of exercise at work can help too, even if it is just a few laps up and down the stairs. Daum recommends vigorous dancing too, but, uh, I am going to recommend against it. To work your mind instead, break out a crossword puzzle or Sudoku. For something more visceral, splash some ice-cold water on yourself (or just drink it instead). You can eat a snack of protein and fruit to get some pep without risk of grogginess. A couple stranger cheats for getting energy include keeping some scented oil at your desk to stimulate the senses, or watching a trailer for an action or horror movie to get you wired. A quick online shopping spree might perk you up too, but that is probably an impractical long-run strategy. Another good option though is to take a few minutes to trade banter with a colleague, because laughter releases endorphins that will keep up and running. Lastly, Daum recommends calling your mom. For some reason, talking to your mother will force you to tap into a vast reserve of energy. You can read the full article here: http://www.inc.com/kevin-daum/12-non-caffeinated-ways-to-wake-up-at-work.html