Your dog, even a giant breed, has a very different metabolism from you and requires fewer calories each day. (blog.pawedin.com)
Since everybody is different — with different metabolisms, hormones, and muscle mass — some people will find more success with certain diets while others won't. (businessinsider.com)
While these model organisms can provide interesting insight, drosphilia and humans have drastically different metabolisms and gene expression regulation. (sciencedrivennutrition.com)