When you get the flu you're down for at least a week. The first few days you usually just lay on the couch half delirious and pray for the sweet mercy of death but then you get to that awkward stage where you're too sick to do anything but well enough to be bored and cranky.
How does Matt handle this? He barely accepts brain boiling temperatures and Brocken bones as a reason to take a night off, how does he feel about Claire or Foggy trying to keep him home with aches a low grade fever and a cough?
Basically just Matt getting over the flu and being a stoic ass.