The arrival of shorter, darker days and a noticeable drop in temperature can significantly impact our daily energy levels, but winter’s effect on our sleep patterns often proves even more disruptive.

DENVER — Denver’s first significant winter storm of the season arrived this week alongside another test: whether the city’s redesigned cold-weather shelter system for families can avoid the problems ...

Many of us have heard the warning: “Don’t go outside without a coat; you’ll catch a cold.” That’s not exactly true. As with many things, the reality is more complicated. Here’s the distinction: Being ...

We asked experts about how winter temperatures can affect your workout. Ask Well We asked experts about how winter temperatures can affect your workout. Credit...Eric Helgas for The New York Times ...