3 hours to survive without shelter. After 3 days, you need water or you'll perish. You can make it 3 weeks without food.
Save. The human body cannot survive without food and water for long periods of time. In fact, according to SurvivalTopics.com, the longest a person can go without water is 10 days--without food, it's four to six weeks. However, due to certain other variables, these numbers can vary. The question of how long you can go without food depends on a lot of factors. Will and determination definitely play a part. Political prisoners on hunger strikes and fasting religious leaders have been known to go for weeks at a time without any food. Gandhi fasted for 21 days while in his 70s. We can't live on air and sunshine alone. The human body needs food and water to survive. A human can go for more than three weeks without food (Mahatma Gandhi survived 21 days of complete starvation), but water is a different story. At least 60% of the adult body is made of it and every living cell in the body needs it to keep functioning. The human body needs food and water to survive. A human can go for more than three weeks without food (Mahatma Gandhi survived 21 days of complete starvation), but water is a different story. At least 60% of the adult body is made of it and every living cell in the body needs it to keep functioning. You can live 3 minutes without air, though we don't recommend trying. In a harsh environment — it's snowing, say — you have 3 hours to survive without shelter. After 3 days, you need water or you'll perish. You can make it 3 weeks without food, though we promise you that won't be fun.
http://www.ehow.com/about_5040218_long-body-survive-food-water.html http://adventure.howstuffworks.com/survival/wilderness/live-without-food-and-water1.htm http://www.businessinsider.com/how-many-days-can-you-survive-without-water-2014-5 http://finance.yahoo.com/news/heres-long-person-survive-without-141400601.html http://www.livescience.com/32320-how-long-can-a-person-survive-without-water.html
how long can a body survive without food and water