Great fencers spend the most time practicing in smartest ways. Smart practice starts with finding the best practice methods, then honing your skills using those methods.
Shadow fencing is a practice technique that allows fencers to step up to their fencing no matter where they are. You can even practice if you don’t have a weapon! You might be shadow fencing already and don’t even realize it. The question is whether you’re doing it as smartly as you could be, and whether you’re getting the most out of your shadow fencing sessions.