How can you tell when you’ve switched from one form of exercise to the other? When you’re exercising aerobically, you can keep going for a longer period than you can with anaerobic exercise. There’s a big difference for your muscles, though: Anaerobic exercise also improves power and builds muscle strength and mass. Like aerobic exercise, anaerobic burns calories and improves your cardiovascular health, insulin sensitivity and blood glucose management. The depleted glycogen stores and buildup of lactic acid during high-intensity anaerobic exercise are part of why the activity can make your muscles so tired. Move anaerobically-as you would during a sprint-and the body pulls glycogen (a form of glucose) from the muscles to be used for fuel. When you’re working aerobically (such as when you walk on a treadmill), fat and glucose provide energy. Oxygen isn’t the only difference between aerobic and anaerobic exercise. Just be sure to check with your health care provider before starting or changing your exercise plan. Here’s how-and why-you should incorporate both forms of exercise into your routine (spoiler alert: You may already be doing it!). Any physical activity performed at an intensity that does not allow sufficient oxygen delivery to muscles is anaerobic.
During the former, oxygen is able to get to your muscles (hence the “aero” in aerobic), but not with the latter.
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