3 ms·

To take this tangent even further afield... Here's an actual real life demonstration of why you should put your oxygen mask on first: https://www.youtube.com/w

• mercer 9y ago
  This is one of my favorite Youtube videos and I'm not entirely sure why. Worth a watch, especially if the topic interests you.
• artur_makly 9y ago
  i think its a nice feature to pass out unconsiously during a high alt plane emergergency where u are about to die.