Ultra-runners face a limit on how much energy they can expend.Credit: Jean-Philippe Ksiazek/AFP via Getty The human body has a ‘metabolic ceiling’ that even the most extreme athletes cannot surpass. A study1 published today in the journal Current Biology finds that over a prolonged period — of 30 weeks or more — that ceiling is about 2.4 times an athlete’s …
Read More »What’s the cap on human energy expenditure? Elite athletes reveal ‘metabolic ceiling’
