How long can a person survive without food?

Did you know that the average human will survive without air for three minutes, water for three days and food for three weeks - the rule of 3's (with some exceptions!)

National Geographic Channel is introducing a new hit series, Doomsday Preppers,  which documents these preppers’ daily lives in readying for the worst.  Observe their different prepping approaches, meet them on their own turf, and track their progress as they think of every possible contingency for the world’s different ends

Doomsday Preppers explores the lives of otherwise ordinary Americans who are preparing for the end of the world as we know it. Unique in their beliefs, motivations, and strategies, preppers will go to whatever lengths they can to make sure they are prepared for any of life’s uncertainties. And with our expert’s assessment, they will find out their chances of survival if their worst fears become a reality.

A group of seemingly ordinary people believe that this year could be their last. They anticipate tougher times brought about by catastrophic climate change, natural disasters, electric-magnetic pulse caused by solar flares, terrorist attacks, global economic collapse, etc.

Catch DOOMSDAY PREPPERS every Monday from Sep 17th at 9:00pm, on National Geographic Channel.

Doomsday preppers will go to whatever lengths they can to make sure they are prepared for any of life's uncertainties.