GO RUN ANYWAY, IF...
You can only breathe out of one nostril, or you are emitting strange whistling sounds when you breathe and you wonder if everyone can hear that, or just you.
You really have a hangover, but you are calling it a cold.
You feel like your brain is in a fog. Who knows? It might lift. Turn back for home if the fog gets thicker.
for more go here: Kristin Armstrong's "Eeenie Meenie"