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The Mistake: You take your coffee decaf.

Why That's a Problem: You're missing out in a simple (and delicious) way to temporarily increase your metabolic burn. "Caffeine stimulates your central nervous system," explains Marisa Moore, RD, in private practice in Atlanta and a past spokesperson for the Academy of Nutrition and Dietetics. "It's estimated that drinking caffeinated coffee can increase your metabolism by about 15 percent for up to 3 hours." Add that to the ever-expanding tally of java's health benefits: lowered risk of cardiovascular disease, diabetes, cognitive decline and, most recently, a decreased risk of premature death.

The Fix: As long as caffeine doesn't leave you a jittery mess, try making the switch. If other issues like acid reflux are holding you back, these healthier caffeine routine tweaks can help.