Question

How can lifestyle affect the functioning of the respiratory and circulatory systems?

Answer 1

Lifestyle can affect the functioning of the respiratory and circulatory system both good and bad ways. 

A healthy lifestyle can affect in a good way, because actions like exercising and eating the right food allows to the body to let oxygen travel fluently around the body.

An unhealthy lifestyle can affect in a bad way, because actions like smoking and eating junk food can disrupt the flow of oxygen or cause obesity.