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Make meals consistent

This means making sure you don't let your tank stay empty for longer than four hours at a time, says Gans. This will ward off both fatigue and general crabbiness.

"The hungrier you get, the crankier you get," says Gans. Small meals spaced throughout the day will also keep acid reflux at bay.

Don't skip breakfast. "Start your day with fiber and protein to get yourself out the door," says Gans.

This could be a bowel of oats or high-fiber English muffin with egg whites.

Next: Get more sleep