During these runs, despite your best intention to maintain a fixed pace, you find yourself hitting the brakes and slowing ...

To put it in perspective: the average human tops out around 15–20 mph, with the world’s fastest moving over 25 mph. A grizzly could sprint quite a bit faster than Usain Bolt… and then keep going for a ...

Interval running condenses the powerful effects of regular running into shorter, high-intensity bursts. Research shows it can ...

Humans evolved large brains and flat faces at a surprisingly rapid pace compared to other apes, likely reflecting the ...