The phrase "body mass" refers to the amount of weight or mass a person's body has. It is commonly used to describe how heavy or light someone is. Full definition
Explain why it would be important to examine the effects of body mass index and dietary restraint on associations between ovarian hormones and emotional eating. (ce-credit.com)
Unfortunately, many senior foods are formulated with lower protein levels and may contribute to loss of lean body mass in older pets. (1800petmeds.com)
These conclusions are based on calculations of body mass index — a person's weight in kilograms divided by the square of their height in metres. (newscientist.com)