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For an individual who has an exercise program in place prior to starting Medifast, we recommend cutting the intensity and duration of your exercise program in half for the first couple of weeks to allow the body to adjust to its new calorie level. As your body adjusts to this lower calorie level, you can increase time and intensity of your exercise plan. For the entire time that you are on the Jump Start Plan, we recommend limiting vigorous exercise to 45 minutes each day.
Listen to your body and only do what it allows. If you feel lightheaded or faint, stop your exercise and take a rest before you resume. Remember to drink fluids—fluid intake is important when you exercise. You may find that you need additional water on the days you exercise, especially if it is hot outside.
For more information and exercise tips, see the Medifast Weight Control Centers Exercise Guide.