Well here is just a few things..Although they are not smoking it second hand smoke can still damage their lungs.It can make their lungs get darker and smaller. Another thing is that it can possibly give them throat and/or lung cancer. Not only that but it can kill them without them getting cancer. It can shut down their brain functions depending on how young they are.
The effects of secondhand that can have on children are it increases asthma attack, ear infections and risk of sudden infant death syndrome, and can cause premature death.
if you are overweight or obese it means that you weigh more the the average healthy weight overweight is a little over healthy and obese is even less healthy than overweight