Take a food break.
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One of the quickest-growing nutrition trends is intermittent fasting (IF) – going prolonged periods without eating – which research shows helps reduce the risk of diabetes, cognitive decline, heart disease, and cancer. Some of IF's biggest proponents are paleo followers, who believe our bodies were designed to go without food for long stretches. Try fasting for up to 16 hours several days a week to boost energy and mood.