depends on your body. but less than you prob need. watch survivorman on discovery channel.
It depends on how much energy the human body expends on a daily base and on a few factors such as age, gender, weight, muscle/fat composition, activities etc. To calculate your daily energy...
a human must eat and drink but you must tell the size and gender of a person and what they normally do as a job or at school.
To provide the energy needed to move muscles, to keep itself warm and to drive endothermic chemical, cellular processes.
thuper aweson iron kids!
we need about 20 percent a day4%