A1C is a blood test that measures your average blood sugar level over the past 2-3 months. The result is given as a percentage. For example, a normal A1C result is below 5.7 percent. The goal for most people with type 2 diabetes is 7.0 percent or less (6). Any physical activity that improves insulin sensitivity and promotes cardiovascular health can lower A1C levels. Walking is a great place to start!