[ WP ] You are a brilliant Med School student who uses extensive knowledge on the human body to win street fights for money to pay for tuition . One night you face your most difficult opponent : a Physics major

I stood in the ring, grinning, as the crowd cheered. 24 consecutive wins since I started; this would be my 25th. More relevantly, this would be $ 5,000 in my pocket. 
 
 And I had n't even broken a bone. 
 
 `` Joining the ring is... Impulse!'' 
 
 The crowd parts. A hulking shadow emerges -- arms thick as steel pipes, chest as broad as billboard. I tense, biting my lip. I'm usually undersized compared to my opponent, but this guy is *huge*. 
 
 He steps into the light, and I breathe a sigh of relief. 
 
 He's big -- but none of it is muscle. His many chins wobble as he huffs and puffs, and his belly jiggles with each step. This will be a piece of cake... which he apparently indulges in often. 
 
 `` 3, 2, 1... begin!'' 
 
 I dart around him easily, jabbing at the temporal part of his sphenoid bone with a phoenix punch -- which Dr. Leroy said was bound to knock someone unconscious. He swerves his head just out of reach, though, and backs away towards the far end of the ring. 
 
 What? 
 
 Grunting, he begins running full force at me. Okay, I've seen this move from beginners -- they get scared in the scuffle, so they back off and try to tackle me with a running start. Thankfully, it has an easy defense: a jab to the neck, which I hardly need to put weight into, since they're going so fast -- 
 
 *THUD. * 
 
 My nose cracks. My neck-jabbing fingers crumple. I fall to the floor, every bone on fire. 
 
 `` Guess you do n't know about inelastic collisions, huh?'' 
 
 I gurgle in response. 
 
 `` Impulse-momentum theorem. More weight, more momentum; that energy's got ta go somewhere.'' He sneers. `` Looks like it went into making you even uglier.'' 
 
 The world fades to black.
