It is 2:00 PM on a Monday. You have a critical meeting in an hour, but you are staring at your screen, struggling to connect the dots. You aren't just tired; you are mentally sluggish. You have "brain fog." For many executives and professionals in Prague, this is a daily reality. We often blame it on lack of coffee or a heavy Czech lunch, but the root cause is frequently cellular. Your brain is the most energy-hungry organ in your body, consuming 20% of your total oxygen supp