1. Stick to it
Losing weight on a restrictive fad diet only to resume your bad habits weeks later is a sure way to gain back all those pounds—and then some. Avoid the yo-yo diet effect by choosing a nutrition plan that you can easily maintain. “Whatever you do from a nutrition or exercise perspective, make sure it’s something you can keep doing every week for the rest of your life,” says Pasternak. If you’re planning to alter your eating and workout habits, ask yourself if your new routine realistically fits into your everyday life. That way, you’re more likely to stick with it.