Last year it was Amy Winehouse and Bob Marley. Up soon are a quartet of films about the Beatles (an impending Michael Jackson biopic has reportedly run into legal woes). Why is this genre playing on ...

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 ...