So, you couldn’t sleep last night. You’d like nothing more than to go back to bed, but you’ve got a long day of work staring you in the face. How do you power through? Science of Us talked to sleep researchers to figure out how to get through a day after you’ve had a sleepless night. Each of them wanted to be incredibly clear, up front, about this: You really, really need seven to eight hours of sleep to function like a proper human being (unless you’re one of those short sleepers — but look, you aren’t). Still, they acknowledged,...