However,the question remains,just how fast can humans run?The answer lies in a combination of several factors. First,there is the physical structure of the runner's muscles.Depending on their structure,some muscles react either quickly and with great power,or react either quickly and with great power,or they don't supply so
much power but they can continue to work over a long periods.
However,the question remains,just how fast can humans run?The answer lies in a combination of several factors. First,there is the physical structure of the runner's muscles.Depending on their structure,some muscles react either quickly and with great power,or react either quickly and with great power,or they don't supply somuch power but they can continue to work over a long periods.
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