I'd start with walking three miles a day at a good pace. Walking is just as healthy for you as jogging but with a lot less impact on the joints. That's what I started doing. I then worked on increasing my pace and then distance. I did this M-F. Now I typically do 4 miles carrying 10lb weights. Results: lost 171 lbs in under 9 months. I also began WW and eat healthier now.