Expert advice: underfueling is one of the biggest mistake cyclists make that can tank performance–here’s how to avoid it.

Even the most elite endurance athletes can’t outrun biology. A new study finds that humans hit a metabolic ceiling at about 2.5 times their resting energy burn. When ultra-runners take on races that ...

Ultra-endurance athletes can push their bodies to extraordinary extremes, but even they run into a hard biological wall.

TDEE stands for ‘Total Daily Energy Expenditure’, which is just a fancy way of naming the amount of energy your body burns through each day, explains Baugh. 'The energy your body uses is what we’d ...