Describe the historical perspective of adolescence.

The  term adolescence alone only started to derive in 1900s because prior to that, society recognize such things as adolescene.
Back then, society only recognize children and adults (13 years old and above). For example, historieans predicted that Alexander the Great started his first conquest at the age of 13-16.
Through their traditional view in the 1800s society, Male who already 13 years and above are EXPECTED to go out and become a breadwinner for his family, by either woeking up in factories or go out farming, and many female are married during this age period.

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. 

Pe.dometer would be the most useful to you for monitoring heart rate.