7. REDUCES EFFICIENCY OF LUNGS
Poor breathing is yet another main health disadvantage of long hours of sitting on chair. Oxygen is required for our survival and this oxygen is present in dissolved form in blood. The function of lungs is to purify impure blood and make it rich in oxygen. Due to improper blood circulation , efficiency of lungs also decreases and thus the rate of blood purification decreases. This in turn results in improper functioning of other organs.