Have you ever walked for too long in the wrong pair of shoes and felt aches and pains for the next few days? I have. Proper footwear is key to a healthy workout.
That's why runners are so picky about the shoes they wear when training for big races.
It's also why Benjamin Pachev is going viral when a photo of him finishing a mini-marathon surfaced online.
Pachev, an 18-year-old applied mathematics student, completed the marathon in 16th place with a time of 71:53. But it's not the time that's making people talk.
Do you see the problem?