effect of exercise on blood glucose
On the other hand, when blood glucose levels drop, glucagon is secreted to increase blood glucose levels by stimulating the breakdown of liver glycogen (i.e., stored carbohydrate). During exercise, blood insulin levels drop, while blood glucagon levels increase. These changes take place to counterbalance the insulin-like effect of muscle contraction. As the muscles contract during exercise, they do not require much insulin to transport glucose into the working cells.