Banishing secondhand smoke
Tobacco smoke from other folks' cigarettes, cigars, and pipes can be bad for your heart.
In the catalog of cardiac villains, smoking is still a leading cause of heart disease even though fewer people are smoking these days. That's a testament to the hazard of this habit. It is also because its effects don't stop with the smoker — they extend to anyone who breathes air polluted by smoke from a cigarette, cigar, or pipe.