There is a specific kind of dread that hits when you check your pressure gauge and realize you’re already down to a half tank, while the divemaster and the rest of the group seem to have barely used any air. Being labeled the “air hog” is frustrating, but contrary to popular belief, it rarely has to do with the size of your lungs. High air consumption is almost always a technique issue. Here is a breakdown of why your air disappears so fast, and the practical steps you can take to make your tank last longer.