Metabolism

Metabolism can vary a lot between people, and researchers don't understand why.

2 people with the same size and body composition can have different metabolic rates. One can consume a huge meal and gain no weight, while the other has to carefully count calories to not gain weight.

Age affects metabolism, making it slow over the years, even if you start out with a fast metabolism. Differences in metabolism speed are evident in how easy or hard it is for people to gain or lose weight.

A slow metabolism burns fewer calories, thus storing more fat; that's w...

Myth: Skinnier people have faster metabolisms.

It’s more about body composition than body size when it comes to metabolism. Metabolism depends on the composition of protein mass you have—muscle is more metabolically active, meaning the more muscle you have, the more calories you b...