[Karev's still trying to process Jurassic Park in the Dark outside, but he's actually turned up at the clinic. It's not the place he's used to but he severely doubts he'll be gaining any free passes home, so he's trying to make the most of it. And with predators in the dark preying on fleshy, bleedy humans everywhere, it's probably best that he be available to help out with trauma or - well, at least some stitches.
So when he approaches Helen, it's not without a cup of tea in one hand, his coffee in the other.] You should consider a power nap.