No and Yes. Most people think of a “diet” as a plan that leaves you hungry. That is not the way people feel after surgery. Eventually, most patients get some form of appetite back 6-18 months after surgery. Your appetite is much weaker, and easier to satisfy than before. This does not mean that you can eat whatever and whenever you want. Healthier food choices are important to best results, but most patients still enjoy tasty food, and even “treats.” Most patients also think of exercise as something that must be intense and painful (like “boot camp”). Regular, modest activity is far more useful in the long term. Even elite athletes can’t stay at a “peak” every week of the year. Sometimes exercise is work, but if it becomes a punishing, never-ending battle, you will not keep going. Instead, work with your surgeon’s program to find a variety of activities that can work for you. There is no “one-size-fits-all” plan. Expect to learn and change as you go! For many patients (and normal weight people, too) exercise is more important for regular stress control, and for appetite control, than simply burning off calories. As we age, inactivity can lead to being frail or fragile, which is quite dangerous to overall health. Healthy bones and avoiding muscle loss partly depends on doing weekly weight bearing (including walking) or muscle resistance (weights or similar) exercise.