Shortly after birth, Terrell could not even hold his head up, but, just a few months later, he can hold his head up and roll over from his back to his stomach. These advances in Terrell's muscle:
A) physical development.
B) child development.
C) cognitive development.
D) socioemotional development.

Smoking damages the respiratory system by inhalation of a foreign substance, that is absorbed and residue is left behind on our lungs sponge like substance. the gas that is inhaled also increase your blood pressure and dilates your blood vessels. also the process of inhaling and exhaling the smoke it causes irritation to the throat and mouth. smoking can cause lung cancer and other respiratory and circulatory diseases. 

Maybe it is yoga , stretches, push ups, sit up etc