Smoking is a really good example of a choice that can have negative effects on the smoker's health, and the well-being of others.

smoking has a lot of negative effects. it builds up tar in your lungs, which increases your chances of developing lung cancer.
it also strains your heart and blood vessels. it makes them weak. and when your heart and blood vessels are weak, not enough blood can get to your arms and legs. when your arms and legs don't get enough blood, their cells begin to die.
and that is why some smokers have to have their arms and legs cut off.

have you ever breathed in smoke from a cigarette that someone else was smoking? because that same cigarette smoke can hurt your body in the same way that it's hurting them.

and have you ever heard of fetal tobacco syndrome? it's a sort of illness that happens to babies whose mothers smoked, while the babies were still inside the mother.
if a mother smokes while she has a baby, her baby could die before it is even born. and if it is born alive, it could be born very weak, and much lighter in weight that it should be.



another example of a poor choice that negatively affects yourself and others could washing your hands.

you have germs on your hands. we all have germs on our hands. we all have millions of bacteria on our hands. millions. and when we touch things that other people touch, even more bacteria can get onto our hands. and some bacteria can make you really sick. that's why you should wash your hands a lot, everyday. because if you don't wash your hands, the bacteria that you pick up can make you sick, and it can make other people sick too.