tim tarras
WKR
I was talking with a co-worker about using a treadmill for exercising. He mentioned that a friend of his has seen guys that do the MMA running on treadmills with their noses clamped shut and breathing through a snorkel.
What benefit do you get from this and is it even safe to something like this?
What benefit do you get from this and is it even safe to something like this?