The old thinking: Procrastinating keeps you from getting anything done. Speaking of which, have you watched Nora the piano-playing cat on YouTube lately?
The new wisdom: In short bursts, dillydallying increases your overall productivity. "After about an hour of intense work, it's hard for people to maintain high-level concentration," says Brent Coker, PhD, an online consumer behavior researcher at the University of Melbourne in Australia. Coker's research shows that people who periodically check Facebook or their personal e-mail throughout the day are, on average, about 10 percent more productive.