Please not too slow, not too fast. For an intermediate student. Thanks!
Once, I was at work and we had a coffee break. I went out to a café with a colleague to have a drink and when we were going back to work, I was so deep in conversation that I banged my head against a lamp-post. It was very painful, and I was afraid I might have serious damage. Fortunately, I didn’t notice any strange symptoms and I only got a bump.