Jaws dropped earlier this month when Tennessee RB Jalen Hurd posted a video of himself running 19.5 mph on an inclined treadmill.

Tuesday he decided to increase the speed on a more level surface, getting up to a blazing 23.1 mph in his latest video.

Try not to fall out of your chair while watching:

Hurd appears to be going all out in his training in what is expected to be a big season for the Volunteers. A preseason ESPN poll recently slotted UT at No. 11, the highest ranking given to an SEC East team.