if you have healthy lifestyle like doing exercises and eating healthy diet your respiratory and circulatory will have no or less complication. It also depends on your environment.
on the other hand
if you have bad habits and your also having bad lifestyle it can cause some illness example of that is: cigarette smoking, drinking alcohol everyday eating junk foods,
As we all know Cigarette can cause complication in our respiratory system. If you don't have healthy diet and exercise it can cause illness or complication unto your circulatory system.
