The sedentary lifestyle is a major factor is the sharp reduction in physical activity due to the development of transport (car, public transport, elevators ...), new technologies (remote controls, television, computers, ... ) does not balance the energy balance. The abundance of food has not necessarily resulted in increased energy intake would explain the obesity pandemic. It has been found at present in lower daily energy intake which remains higher than the daily energy expenditure. It is the latter that remains a factor in obesity.
Thermoregulation assisted by new technology have enabled the introduction of air conditioning, heating facilitate stabilization of body temperature. The body does not fight against variations in temperature which does not cause significant energy expenditure.
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