THIS Is why flight attendants tell you to secure YOUR mask before helping others

July 23, 2016

You've heard the flight attendant say this before: "Secure your own mask before helping others." But why?

Hypoxia sets in.

In this video, Destin Sandlin of Smarter Every Day demonstrates what happens to your brain when you lose oxygen at high altitudes and how important putting your mask on first truly is.

feel good videoHis Last Day As A Teacher After 36 Years. They Turned It Into A Memory For Life

feel good stories'I Laughed And Cried': Vet’s Hilarious Condolence Card Brings Laughter To Grieving Cat Owner

feel good storiesThree Brothers Cleaning Out Mom’s Attic Found A Comic Worth $9 Million

feel good storiesTeen Runs His Own Restaurant ALONE — One Of The Most Uplifting Stories You'll Read

feel good storiesA Man Ruined A Beautiful Snowman Display — What Happened Next Was Perfect

feel good storiesPet Owners Share Hilarious Stories Of Paying The Vet… Just To Find Out Their Pets Are Weird

feel good videoDaycare Worker Goes Viral After Dancing For Babies — Their Reactions Are Priceless

feel good videoUnexpected Friends: Rhino And Tiny Deer Play In Snow

feel good videoSheep Escape Herd And Wander Into Supermarket In Funny Video

feel good videoDog And Rooster Chase Each Other In The Funniest Video You’ll See Today

feel good videoDonkey Gets Tricked Into Taking His Medicine — And It’s Adorable