You may need more vitamin D from food or a supplement in winter, especially if you live in the northern half of the country. A classic study found that winter sun in Boston makes no vitamin D in skin from...

So you signed up. Or you’re about to. Maybe a coworker talked you into it. Maybe the race shirt came in a nice color. Maybe you watched a marathon on TV and thought, “Sure, but shorter.”...

Thaw a turkey in the refrigerator for about 24 hours for every 4 to 5 pounds, so a 20-pound bird needs 4 to 5 days. In cold water it takes about 30 minutes per pound, with the water changed every 30 minutes...