Elite ultramarathon runners can push their bodies to incredible extremes, but a new study suggests even they can't break through a fundamental metabolic ceiling. Researchers tracked 14 endurance ...

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

Personalized dosing strategies may be necessary for biologic therapies, especially fixed-dose options like ustekinumab, due ...

When athletes devote large amounts of energy to running or cycling, they unconsciously cut back on energy output elsewhere.

While ultramarathoners are capable of huge energy spurts, overall the athletes top out at 2.5 times the metabolic rate needed for basic body functions.

The metabolic ceiling represents the maximum number of calories that a body can actually burn. For humans, it is believed to ...