We carry our giant water bottles everywhere, right? We feel virtuous chugging plain water during a tough workout. But here’s the thing: when you sweat—I mean, really sweat—plain water alone just isn't ...

Getting in shape isn’t just a numbers game. Experts share how strategically timing your workouts and listening to your body will give you the edge.

An Indonesian volcano led to lousy weather in Europe. Trapped inside, Mary Shelley began to write “Frankenstein.” ...