In workouts I'm breathing every stroke and into and out of every flipturn. Even worse, once I am really gasping for air (in the middle of a hard set or on the 3rd turn of a 100) I am almost coming to a stop off the turn to catch my breath. I've been swimming 2000-3000 yards 3x/week for the last 18 months dropping intervals and increasing speed but I guess I am still just not in good enough cardiovascular shape?
Of course, it can't help that I have been constantly reinforcing bad habits. But can I just keep plugging away and eventually the fatigue from swimming the length will at least equal the fatigue from the turns?
The alternative I imagine is some kind of hypoxic training that is going to make me miserable. But I'm willing to do what I've gotta do at this point.