It seems like phrases like "stay hydrated" and "drink plenty of water" are some of the lowest-hanging fruit when it comes to health and wellness advice. But what does that mean? How much water do you really need during exercise? In short, it ultimately depends on the duration of your workout and how much you sweat.

  If you’re an endurance athlete, you’ve probably heard an endless amount of advice regarding what to eat in the days leading up to a big event. But what’s really the best way to fuel your body before an endurance event? Some athletes favor carb-loading, temporarily boosting their intake of carbohydrates before a major race to increase their energy stores.  Before you start eating all the grains you can get your hands on, though, you should know that there’s much more to carb-loading besides ...