There may be days when you feel like you are running on two cylinders but you hit the gym anyway. That’s not a good idea— you have to be on top of your game mentally to train effectively, and have laser focus and clear thinking for the best workouts. What’s more, if you are not focused, you could drop a 45-pound plate on your foot. While some people might tell you to get more sleep, nutrition could be the key to flexing your mental muscle. Are you eating the wrong foods that shortchange your focus and mental energy— and ultimately do a number on the most important part of your body, your brain? Healthy Brain, Healthy Body Perhaps you are not thinking about your brain when you set foot in the gym— more likely, you are sizing up which body part to train— but brain health can be your most important training partner. The right food choices can do much more than impact the shape and size of your body; some foods help our brains stay sharp, as New York Times bestselling author Max Lugaver...