Why should pregnant women refrain from smoking?

Pregnant women should refrain from smoking because of the potential negative effects that smoking can have on a developing fetus. The developing fetus can be exposed to the dangerous chemicals found in cigarette smoke as it receives nourishment from its mother. Pregnant women who smoke are at increased risk of having a miscarriage, early birth, having children with low birth weights, and delivering a stillborn child.

cutting out negative people, changing their diets, exercising, taking off days from work or school, etc