You may think you’re doing a good thing by banishing sweet treats. But studies suggest that feeling deprived—even if you are consuming plenty of calories—can trigger overeating. And making any food off-limits just increases its allure. So if it’s something sweet you’re craving, go for it: a small treat won’t break your diet! Two squares of dark chocolate or ½ cup of (nonpremium) ice cream clock in at under 150 calories.