>> The reason elephants don't outrun cheetahs is that they accelerate more slowly and run out of energy before hitting the top speed their muscles could produce

>> The reason elephants don't outrun cheetahs is that they accelerate more slowly and run out of energy before hitting the top speed their muscles could produce. > Big beasts, in other words, run out of so-called anaerobic energy, supplied by the muscles, before being able to reach their theoretically maximum speed.“ Aren't we saying the same thing?