When you tell people you want to lose weight, the first thing they say to do is exercise. For someone who is morbidly obese, that is not the easiest thing to do. Moving around can be difficult and even painful. The above linked article is really beneficial for people who aren’t sure what to do in that situation.
Yes, more movement is usually the best. But it can also be harmful if not done correctly. Make sure you speak with your doctor before beginning any exercise program. Discuss your concerns. If you have a good doctor, they’re going to understand what is in your mind and heart and will help guide you toward what is best for you.