If an individual is trying to lose weight, should they include physical activity in their weight loss program along with dietary changes? Justify your answer. 

Imagine that a friend of yours who is 40 pounds overweight recently began dieting to lose those 40 extra pounds. Your friend is determined to lose the weight before her wedding, which is in 4 months; therefore, she decided to take drastic action. In order to drastically reduce her calorie intake she is eating only two small meals a day (lunch and dinner), and she has eliminated all of her favorite foods. Your friend started out trying to exercise regularly, but found that her energy level is so low that she just didn’t feel like exercising. Explain why this approach to weight loss is unlikely to produce long-term success.