Lead researcher Dr. Ty Brumback adds, «The most important thing about the study is that despite heavy drinkers» extensive experience with alcohol, increased speed of metabolism, and lower self - perceived impairment, we show that on a more demanding task they are just as impaired as light drinkers.» (sciencedaily.com)
Body mass is also tied to an animal's physiology (including speed of metabolism and length of pregnancy), ecology (diet, home - range size) and behaviour (social status, aggression). (palaeontologyonline.com)
A variation of the gene PDSS2 also affects speed of metabolism. (caffeineinformer.com)