He really likes going out for a run. It's a Saturday, he doesn't have class and he's convinced Leo to not take him along to the party: it should be a great day. However, he's not even halfway through his run when he begins to notice a weird feeling. It's hard to put it into words but it starts of like a mental itch and seems to be growing stronger. He might not know what it is but he's certainly not interested in being sick or having a breakdown or whatever else it might be in public, so it soon has him turning around to head back home. He can face this in private, thank you very much.