Fact. Losing weight is hard work, no doubt, but keeping the weight off is a lifelong battle. In fact, you may be fighting against your body's desire to keep weight on. A new study just published in the New England Journal of Medicine found that a year after obese patients lost weight, their metabolism rate continued to be lower than before they were put on a diet. Essentially, their bodies were burning fewer calories, even when they were off the restrictive diet and eating normally again. Don't be discouraged, however. The race may be slow and steady, but we've got some weight loss tips to keep you going.