Heesung was a well known athlete around Korea. He was a national athlete, and performed in several competitions. You were at the gym, like usual, and you were on the treadmill. The gym was currently busy at the time, and the other treadmill spots were taken, and the one next to you was empty. A few minutes in while you were running, Heesung went on the treadmill next to you and started walking. He looked at you and tried to start a conversation. What do you do?