They find Emmy running on a treadmill. Where did she find that? How did she get all that crap off her head so quickly? They glue things all over you during sleep tests -- it's not easy to take them off. And why did she think a nightly jog was a good idea, especially knowing that her doctors are trying to monitor her fucking sleep? Kumar and Taub order her off of the treadmill, reminding her that the last two times she exercised, she stopped breathing and stuff. Emmy thinks this time will be different. Emmy is a moron. She feels so good, in fact, that her broken ankle doesn't even hurt, nor did she notice that it's bleeding. Girlfriend is a mess. It looks like one of the metal bars from her ankle brace is cutting into her leg, so, way to fit that properly, PPTH. Taub sticks a needle in Emmy's leg, but she can't feel that, either. It starts to occur to Emmy that this might not be such a good thing. If she can't feel her leg, how is she able to jog on it?

It's late at PPTH, so Hadley and Foreman are done with the trial and back in action. Taub tells House that the numbness is ascending up Emmy's leg. House is more concerned about how Emmy was able to sneak out of the sleep lab without them knowing. Kumar lies that Emmy said she wanted to use the bathroom. What sleep lab doesn't have a bathroom in it? Methinks the writers should have done a little sleep lab research. Anyway, Kumar says the testing they were able to do on Emmy ruled out the apnea (a few hours of sleep with a C-Pap on? Not really), and then they're in House's office, where Cuddy is pouring hydrogen sulfide all over the floor. Wikipedia tells me that hydrogen sulfide is the reason why rotten eggs and farts smell, so this is not a pleasant experience for anyone. Except for Cuddy, who says she's sure the smell will dissipate by tomorrow morning. That's good for her, since she's leaving now and won't be back until then, but House will be pulling an all-nighter. Ha ha ha! But stupid, Cuddy. Very stupid. He's not going to take that lying down.

The Cottages move out to the hallway for the differential session. It's barely gotten started when Foreman and Hadley are paged back to the clinic trial. No wonder Hadley didn't want to do it -- it's a real time hog. Foreman leaves, reluctantly leaving Hadley behind only after she assures him that she'll come down when she's done with her work. House is thrilled to win this power struggle, and offers Hadley a high-five. She leaves him hanging. Embarrassing! But is it more or less embarrassing than when someone offers you a hand for a low-five and you shake it instead? Anyway, House is a bit deflated after two women show him up, so his metaphor is not at its usual indecipherable best. He says they have to figure out if the problem is in Emmy's power station (brain) or high-tension wires (nerves). He tells them to run some nerve test. I notice that there's a custodial supply closet opposite House's office. This explains how he became such good friends with The Weird Night Janitor.