So, it's you and Superman mano-a-mano. How would you fare? Not so well, it seems. Superman burns about 45 trillion calories with a single punch — that's equivalent to eating nearly 82 billion McDonald's Big Macs. That's a lot of energy to go up against.
Thankfully, nobody ever has to worry about getting punched by the man in the red cape since he only exists in the fictional world.
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