Harvard scientists used cutting-edge microscopic techniques to study 1,700 men and women and found only one thing in common among all overweight individuals: low levels of mitochondria.
They also found one thing in common among all lean, toned people with smooth, youthful skin: high levels of mitochondria.

This happens because, like tiny engines, mitochondria are small parts inside each cell of our body that produce energy from the food we eat and from burning stored fat.
This energy, called ATP, is what our body needs to do everything—from moving our muscles to keeping our hearts beating and enabling thought processes.

In summary, mitochondria burn fat and power every part of our body to keep it running smoothly. So the more mitochondria you have, the more fat you burn!