How long can a person survive without air, food, water, sunshine, or sleep?

[Luxman]

Water is the essence of life. Drink 2 cups before each meal and a few more throughout the day.

If sex, once a month with another person, was essential to survive, most of us would be dead.

http://www.sciencealert.com/here-s-...ived-without-air-food-water-sunshine-or-sleep