Answer- When you only did it six times last week, so the strength of your strokes and kicks is improving enough that you are getting from one end of the pool to the other with fewer strokes now.
Question- What is the most convincing sign that you are a crooked swimmer?
Answer- When your arm hits the lane rope, but it is the arm farthest away from the rope instead of the one right next to it!
Question- What lesson did an old blind swimming English teacher learn this week while at the pool?
Answer- White canes don't float!!!!!