Exercise helps lower blood sugars and benefits the lungs so its a double good whammy <img src="i/expressions/face-icon-small-smile.gif" border="0"><img src="i/expressions/face-icon-small-smile.gif" border="0">. I am on insulin, but i only take long acting in the morning and a short acting only as needed ( which isnt too often). I tend to like to walk on the treadmill about a half hour to an hour after dinner which is when my blood sugar would be at its highest and it does wonders. Diet and exercise may be all you need to control your blood sugar. And like Lindsey said, dont cut out all sweets completely, just cut out the ones you can part with, and for the ones you can't part with ,limit how much of it you have.