I was in bed all day today, sick from food poisoning (食中毒 【しょくちゅうどく】). It couldn't have come at a worse time because I'm just starting this Administrative Training course on Japan-China relations.
The good thing, though, is that it appears the worst is over, so I feel like 起死回生 【きしかいせい】 (n) revival of the dead; recovering from a hopeless situation; resuscitation. Literally: Wake from death and return to life. Apparently, this one is used to mean "to come out of a desperate situation and make a complete return in one sudden burst" so probably not exactly what I mean, but close enough!