If you had asked me that question before this incident, my answer would have been: everybody. Everybody on the face of the earth knows that not sleeping and not eating will cause you both physical and mental problems, up to and including death. After seeing this video, however, I realize I would have been wrong to say that, because at least one person had to find out the hard way.
In this video from Bad Boy, "Shogun" Rua gets his train on in preparation for his bout with Mark Coleman at UFC 93 next weekend. At least in the gym, this looks more like the old Shogun we all knew and loved, the Grand Theft Title-era Shogun, if you will. Now we just have to wait and see if that transfers into the Octagon after so much time off.