Answer:
There are many harmful chemicals in the cigarette that increases the red blood count. The compounds that is found in the cigarette are carbon monoxide, and other compounds that decreases the level of oxygen inside the body.
In order to compensate the oxygen level of the body, the body boosts the level of production of red blood blood cells in the body.
hence, the chemical like carbon dioxide and monoxide tends to decrease the level of oxygen in the body and elevated red blood cells.
The top number is the maximum pressure your heart exerts while beating (systolic pressure) the bottom number is the amount of pressure in your arteries between beat (diastolic pressure)
Streching will reduce the risk of injury
By our blood and our moisture like sweat I believe