HAMBURG — The last time I went for a jog was almost four years ago. I remember it clearly, because afterward my then-pregnant wife said, “That’s it, I can’t do it anymore. From now on, I’m switching ...

Loading up on healthy food before a workout may seem like the right move—after all, many runners will carbo-load before a big race—but how long should you wait to work out after eating? It depends on ...