<unk>  is calculated by comparing one's basal<unk>  rate to the average of one's chronological<unk>  group. All the components in the body require various levels of energy to be maintained. Body fat requires much less energy than lean muscle, as lean muscle is much more<unk> ally active and therefore requires more energy expenditure to remain in homeostasis. If comparing two individuals, with all variables being equal, the person with more lean muscle mass will have a higher basal<unk>  rate, and therefore, a lower<unk>  in comparison to those with the identical chronological<unk> . According to a sports medicine specialist,<unk>  isn’t something we talk about in the medical community... The marker of the ultimate definition of health it is not.”
Metabolic age
Bone age
Sex after pregnancy
Menstrual cycle
Gestational age
Child development stages
Genetics of obesity
Childbirth positions