In thermal terms burning calories equates to your body using the energy it needs to get the job done. In terms of getting the job done, it’s all about muscles.
Muscles are the furnaces that take all that energy we’ve got inside us and tosses it all on the fire of movement and exercise. How well your body does that exactly is rooted in your individual aerobic fitness. This is the stuff of how hard and how long you can push and sustain physical effort.
To be sure we all aren’t world class athletes but there’s no reason we all can’t become the best fat burners we can with improved aerobic fitness.
The breath to breath of aerobic fitness
Aerobic means “with oxygen”…