NPR's science podcast Short Wave brings us stories on food fortification, why some people don't seem to get the flu, and a study on how much vigorous exercise you really need.

TRENDY FOODS AND fashion come and go, and so do trendy exercises. The cycle has churned for years, with everything from infomercials like Tae Bo to P90X to whole modalities that became more than just ...

While exercise can decrease your risk of heart disease and cancer, working out in areas with high pollution can cut the protective effects in half Cara Lynn Shultz is a writer-reporter at PEOPLE. Her ...