The anaerobic engine is for fast and intense activities, like squatting a barbell or sprinting all-out for 30 seconds. You can emphasize the aerobic system with continuous low-intensity activity lasting 20 minutes or more. The aerobic system is best for long and relatively easy activities - the stuff you spend most of your day doing: working at a desk, eating, walking - and for lower-intensity forms of exercise, like jogging. Both engines are always active, but depending on the duration and intensity of your workout, one will work harder than the other. Think of your body as a hybrid vehicle with two engines: one is aerobic, meaning it requires oxygen to run, while the other is anaerobic meaning it does not need oxygen.
Myth: Cardio is the same thing as “aerobic exercise”Īerobic exercise is a form of cardio - but it’s not the only one. That’s because they don’t challenge your heart and lungs enough to improve their function. While leisurely activities like walking and easy bike riding have benefits of their own and are cardiovascular in nature, they aren’t cardio exercises (unless you are very deconditioned). In short, it has to raise your heart and breathing rates and challenge your cardiovascular system, just like a biceps exercise has to challenge your biceps and an abdominal exercise has to challenge your abs. For an activity to qualify as a cardio workout, it has to meet both criteria mentioned above. Just about any physical activity you do can increase your heart rate, from lifting weights to strolling between your desk and the bathroom to rolling out of bed in the morning. “People tend to think of cardio in terms of steady-state exercise, like jogging, but the definition is simultaneously simpler and more complex.” To bring more clarity to this type of exercise, let’s tackle a few common cardio misconceptions, one at a time: Myth: Cardio is any exercise that increases the heart rate
and BODi’s senior director of fitness and nutrition content. “Cardio is anything that A) raises your heart and breathing rates, and B) improves the function of your heart, lungs, and circulatory system,” says Trevor Thieme, C.S.C.S.
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