What are all these aerobics actually doing for my body?

(This comes from a 20-year-old young lady who does aerobics at least four times a week.)

These aerobics you are doing so faithfully (which is terrific, by the way!) are doing a number of things for you. Here are some of the best:

Aerobics work the heart

Increase endurance for all your physical activities

Create lean muscle

Jump start the cardiovascular system (lungs, flow of oxygen to the muscles, etc.)

Burn fat

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