How to lose weight

The most effective method for weight loss is reducing the number of calories you consume while increasing the number of calories you burn through physical activity. To lose 1 pound, you need an expenditure of approximately 3,500 calories. You can achieve this either by cutting back on your food intake, by increasing physical activity, or ideally, by doing both.
For example, if you consume 500 extra calories per day for one week without changing your activity level, you will gain 1 pound in weight (seven days multiplied by 500 calories equals 3,500 calories, or the number of calories resulting in a 1-pound weight gain). Likewise, if you eat 500 fewer calories each day for a week or burn 500 calories per day through exercise for one week, you will lose 1 pound.

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Finding a Healthy Weight

Weight loss is a tricky topic. Lots of people are unhappy with their present weight, but most aren't sure how to change it — and many would be better off staying where they are. You may want to look like the models or actors in magazines and on TV, but those goals might not be healthy or realistic for you. Besides, no magical diet or pill will make you look like someone else.

So what should you do about weight control?

Being healthy is really about being at a weight that is right for you. The best way to find out if you are at a healthy weight or if you need to lose or gain weight is to talk to a doctor or dietitian, who can compare your weight with healthy norms to help you set realistic goals. If it turns out that you can benefit from weight loss, then you can follow a few of the simple suggestions listed below to get started.

Weight management is about long-term success. People who lose weight quickly by crash dieting or other extreme measures usually gain back all (and often more) of the pounds they lost because they haven't permanently changed their habits.

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