Kyto Fit Keto We often feel a sense of great control on a diet. It doesn't take long, however, before you're fighting off the cravings for your favorite foods. In a healthy weight loss diet, however, there is the potential to maintain the weight because you're eating healthy foods and you're portioning the foods well. Did you realize that your body simply slows its metabolism in response to fewer calories? You need fewer calories to function on unless you get out there and exercise. You even need to increase your exercise plan more when you're on fewer calories. If you quit exercising, the weight will return even faster because you're not burning as many calories each day.