You need about 1400 calories a day, 2l of water, a 40x40x180cm box to stand in, somewhere to drain your waste, and a temperature that is about 20-24 degrees. Oh

You need about 1400 calories a day, 2l of water, a 40x40x180cm box to stand in, somewhere to drain your waste, and a temperature that is about 20-24 degrees. Oh and some oxygen Everything else is want and as a society, we agreed that you don't need to justify your want. Whether that is a bottle of beer or a new smartphone.