Every human being is not able to live actively with no food. The Blockade of Leningrad show us that it is not the most important thing we need, but the amount of its victims proofs that we better find food.
From the biology we know that the energy cannot come from nowhere and that people are not able to get it from the light as most flowers do. But without energy person can only lie in his bed and than his dies because he does need energy to move but also he needs energy for his organs, to make his heart tbeat and blood run.
It may seem that it's ok not to eat all day when you are busy or not feeling very well. Actually it really harms your health and others No one likes to spend