As our study indicates, each recession in the past 42 years was preceded by a period of negative growth in real gross total debt.

FORBES: Double-Dip Yes, But Bullish Just The Same

Mark Norell, a prominent paleontologist at the American Museum of Natural History in New York who didn't participate in the study, said he doesn't know if the upright-posture myth is as widespread as the new study indicates.

WSJ: T. rex not a stand-up guy? Test your dino skills

As it turns out, a recent study indicates that precise feedback in measures of health can actually lead to worse results.

FORBES: The Virtues of the Imprecisely Measured Self