Being an animal mutant is a real pain. Imagine not being able to stop scratching your skin due to the fleas at training with your mentor. Logan notices that, of course, and stops talking about the details of the combat move he was trying to teach you. "What's the matter?" He asks, puzzled. You've been scratching at your skin nonstop, and Logan doesn't think he has your full attention. Training needs full attention for obvious reasons.