What's tougher than doing Insanity Max Interval Plyo? Doing it with a fucking head cold.
It's apparently okay to exercise when sick, but I probably should have eased back into my workout routine rather than diving right back into a crazy-intense Insanity session. After finishing the last plyo circuit of the day, I felt woozy and had to lie on the floor for a minute before getting up to stretch.
I should listen to M's advice. "You don't need to induce orthostatic hypotension to get a good workout," she said. (M not only has more common sense than me, but also often talks like a character on "ER.")