How Long Can a Person Safely Hang Upside Down?

Does hanging upside down make you feel a little panicky? Like it might explode your head? Like all your spit might pool in your nose and drown you?

How Long Can a Person Safely Hang Upside Down?   View this email in your browser How Long Can a Person Safely Hang Upside Down?   Reality Probably Isn't a Computer Simulation After All, Analysis Finds The "Matrix" trilogy of sci-fi thrillers present the fascinating premise that what most people think of as reality is actually a computer simulation ... See more Inside Yellowstone's 'Zone of Death' Crimes Can't Be Prosecuted Yellowstone National Park, an idyllic and beautiful geographical gem situated in Wyoming, Idaho and Montana, hides a dark secret: See more 7 Times Misleading Movie Trailers Didn't Align With the Film   Neanderthal DNA Changed the Way Modern Humans Look   Where Did the 'DEE-FENSE' Sports Chant Come From? Lots of teams have unique rallying cries that help their fan bases stand out. For example, New York Jets diehards like to show off their spelling skills by hollering "J-E-T-S. JETS! JETS! JETS!". See more >> Copyright © 2017 HowStuffWorks, All rights reserved. You are receiving this email because you opted in at our website howstuffworks.com Our mailing address is: HowStuffWorks 675 Ponce de Leon Drive NE Suite 4500 Atlanta, Ga 30308 Add us to your address book Want to change how you receive these promotional emails? You can update your preferences or unsubscribe from this list