A “ cold shock” sounds unpromising, at least at first blush. Plunge into icy water, and, as you gasp for air, your heartbeat jumps, blood vessels constrict, stress hormones like cortisol, an ...

During the recent fires, many L.A. residents were inundated with information (and misinformation) about air quality. Here's the latest on a few spots where you can hike safely post-fires and not fret ...