You may have heard this over a thousand times but it really does help. Exercise by far is the best medicine to stay fit and healthy. So if you have been recently diagnosed with prediabetes or with a sugar level in the high risk range there is good reason for you to start exercising. There are various studies showing a link between exercise and delayed onset of diabetes. The U.S. Diabetes Prevention Program (DPP) one of the largest studies on diabetes and exercise recommends 30 minutes of moderate physical activity 5 days a week to prevent diabetes in high-risk individuals.