it does... in the lower legs, the muscle contractions help the venous valves to keep venous flow moving upwards, helping the blood move from the feet to the heart, preventing pooling of venous bloods...
obesity is not being overweight. It is having so much body fat inside your body that it is overwhelming to your system. It can cause diabetes, and heart failure.
Nicotine causes contraction of blood vessels, and the carbon monoxide in the smoke reduces the amount of oxygen that reaches the cells of the body, including the muscular system, by as much as 50%....