Why can't humans fly ?
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human have not wings to fly ,, body structure differ
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an average adult male human would need a wingspan of at least 6.7 meters to fly. This calculation does not even take into account that these wings themselves would be too heavy to function.
There is a reason that a 6-year-old girl can do more pull-ups than her 40-year-old father — she may be weaker, but her strength-to-size ratio is still greater than her father’s ratio. In other words, humans are not too large to fly, but our strength simply cannot support our weight in flight.
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