Essential Weight-Loss Rules That Can't Be Broken

Always Eat Breakfast

Skipping meals is a big mistake in nutritionist Cynthia Sass's eyes, especially breakfast. Enjoying a hearty and nutritious meal in the morning can actually jump-start your metabolism and encourage pounds to drop. Choose a breakfast that's high in protein to give you energy as well as full of fiber to keep you satisfied for hours.

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You Have to Make a Change to See a Change

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Unfortunately, you can't continue eating huge bowls of ice cream after dinner and expect to see the scale numbers drop. In order to encourage a change in your weight, you need to make healthier lifestyle changes that include eating nutritious, balanced meals most of the time, with the occasional splurge. Remember, you're not just dieting — you're changing your eating habits. That's the principle behind the 80/20 rule. Jessica Alba's trainer, Yumi Lee, says, "You can't be 100 percent all of the time, but you can be 80 percent all of the time."

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Healthy Foods Don't Mean All You Can Eat

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Nuts, nut butter, avocados, sweet potatoes, orange juice, brown rice — these foods are all highly nutritious, but that doesn't mean they're void of calories. You still need to be aware of serving sizes, even for foods that are super good for you.

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Calories in Can't Exceed Calories Out

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Losing weight is about simple math: you have to burn or cut out 500 calories a day to lose one pound in a week. If you burn 250 calories on a morning run, you'll need to cut out 250 calories from your diet that day. Don't get in the mindset that a workout gives you a free pass to splurge, because you'll end up taking in more calories than you burned, which will result in weight gain instead of weight loss.

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Once the Weight Is Gone, You Can't Go Back to Your Old Ways

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You used to guzzle a can of Coke with your lunch, but when you decided to lose weight, you replaced it with a seltzer. Now that the weight is off, don't go back to your soda habit. Losing weight is a forever lifestyle change, not something you do until you reach your weight-loss goal. Once you go back to old eating habits, the weight will quickly creep back on.

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