I'm sure this mountain biker got more than enough cardio, pedaling for his life as a black bear chased the him down the mountain!
At one point the bear starts to catch up with the biker cutting corners, luckily the biker made it down the mountain safely.
The incident happened about a year ago, but the footage was just released by Montana knife company.
A spokesperson for the company said this is why even bikers and hikers should be carrying knives, but if a bear is chasing me I think I would want more than a knife! Lol