Got brain fog? You know, that feeling of mental fatigue that clouds your thoughts, keeps you from concentrating, and just generally makes you feel crummy? While it's not technically a medical diagnosis, it's pretty common—and it can happen for a number of reasons. If you've been feeling blah for some time, you may seek out an expert who can help you navigate those symptoms.
Enter neuroscientist and author of Biohack Your Brain Kristen Willeumier, Ph.D.: She sees plenty of patients looking to cut through the mental noise and feel sharp once again, she walks us through the process: "If I'm going to work with somebody and help them to have a better memory, the first thing I say is: 'How much [water] are you drinking?'"