HOW DOES EXERCISE LOWER BLOOD SUGAR exercise lower blood sugar in two ways first , exercise increases insulin sensitivity this means that your cells are better able to use available insulin to absorb sugar from the bloodstream to be used as energy for your body. second exercise stimulates another mechanism that allows your muscles to absorb and use sugar for energy , even without insulin not only does exercise in shorterm, but exercising over time also contributes to lower a1c levels over time . diabetes doctors in bangalore.