Whole Body

Basal heat production decreases Basal oxygen uptake per kilogram of body water unchanged Body fat increases Body temperature circadian rhythm flattens Body temperature decreases with age Body weight declines Circadian Rhythm Cold-induced heat production tends to decrease Decreased ability to maintain body temperature when exposed to cold Earlier circadian temperature phase Hot flushes Lean body mass decreases Reduction in total body protein Resting metabolic rate decreases with ageing Total body potassium declines Total body water decreases Variations in body weight