Individual athletes ran an average of 4,000 miles over a year to help define the human body's limit for energy expenditure ...

Scientists have long hypothesized about a theoretical limit to human energy use. The research, published today in Current ...

Lead exposure may have spelled evolutionary success for humans—and extinction for our ancient cousins—but other scientists ...

If we look across the whole of the mammal branch of the tree of life, we find there are many groups of mammals that have ...

The research, published today in Current Biology, showed that ultramarathoners can burn an astounding 11,000 calories per day ...

A study of 33 participants on stationary bikes found that during exercise, people perceive time as moving slower, estimating 30 seconds 8-9% faster than real time. The presence of a competitor or ...

Aging seems to occur in a linear fashion throughout the human lifespan, from childhood to the "golden years," but a new study has revealed one specific turning point when aging starts to accelerate in ...

HIV is infamous for its ability to hide in the human body for decades, typically requiring long-term treatment to prevent a ...

A new study reveals a metabolic ceiling - an upper limit to how much energy the human body can sustain over time, no matter ...