There are many things you can do to quickly lower your blood sugar levels, such as exercise. The quickest way to lower blood sugar is by taking fast-acting insulin, which can be used in urgent situations. Exercising is another method to quickly reduce blood sugar, as glucose is rapidly metabolized by the body in the production of energy. As a result of this demand for glucose for energy, the body’s cells deliver glucose to the muscles, which typically lowers blood sugar levels. Cardio is typically needed for this to work, such as walking at a fast pace, although other exercises that make the blood pump harder are also effective.