Mistake #4: The energy drink
This one’s tricky, because research has proven that a little pre-workout caffeine can rev you up. The problem is, monstrous energy drinks also have tons of workout-crashing sugar.
“The high amounts of caffeine in many of these drinks can really wreck your sleeping habits, setting off a vicious cycle,” says White. “Because when you don’t get enough sleep, your workouts and diet suffer, too.”
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