[eru]

Only if you also ate some random other stuff you found lying around. Doesn't even have to provide much in the way of energy, just enough 'dirt' to round out your diet with whatever other essentials you need.

Human bodies have evolved to survive for a long time on relatively little, yes. But not to evolve for a very long time on a single source of very 'clean' food like snickers bars. 'Clean' in the sense that chemically snickers has relatively well defined inputs, whereas hungry humans would eat just about anything, including insects and grass and bark or leather.

[kortilla]

This isn’t true. There are countless cases of people surviving for months on nearly no food at all.

I’m not talking about what it takes to stay alive for long term periods. I was refuting the silly idea that you would die after a couple of days/weeks of snickers.