10 foods that zap your energy

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Bananas

Bananas are touted as a great pre- and post-workout snack, but if you're not planning on breaking a sweat, they can actually set your body up for a slight bout of tiredness, due to their high magnesium content. Magnesium is a natural muscle relaxer, which is perfect when you want to take a nap or doze off at night but less ideal when you've got a ton of things to get done during the day.