But the one thing that you can do is walk. You can start out slow, and then make the time longer, or pick up your pace and walk for the same amount of time. In 2 weeks of walking, and eating healthy I lost 4 lbs.
Just being active is a plus to losing the weight in the midsection, and buttox. Because you are working out those muscles, especially if you walk up and down small hills. I wouldn't start out on a big hill, you would really suffer from that.
Just make sure you take your time, and don't put yourself in pain, it will work better if you take your time. Hope this helps, good luck.