How Age affects the BMR?
The BMR per unit weight also varies with age, being higher in children and lower in the elderly. The loss of FFM with ageing is associated with a decline in the metabolic rate, amounting to about 1-2% decline per decade after early adulthood The REE is highest during the periods of rapid growth, chiefly during the first and second year of life, and reaches a lesser peak through the periods of puberty and adolescence in both sexes.