Add Yahoo as a preferred source to see more of our stories on Google. Air pollution from wildfire smoke can worsen heart and lung disease. helivideo/iStock via Getty Images Plus As the summer’s sunny ...

Kicking the habit may add centimeters to your waist, but this twin study reveals that physical activity is the key to staying trim after quitting. Discover how genes, lifestyle, and movement shape ...

As the summer's sunny days take hold, many people turn to outdoor exercise. But in parts of North America, pleasant weather often aligns with wildfire season. As summers get drier, both the frequency ...