A man is connected to a safety harness and running six seconds on a fast treadmill.
A kid is doing intense training while being hooked up to a treadmill.
A man at a gym is strapped to a machine while sprinting on a treadmill.
In a gym a young man is in a harness and running on a treadmill.
A man dons a harness attached to the ceiling so that he doesn't fall when running on a very fast moving treadmill.
A man in a gym with a trainer and friends is in a harness running as fast as he can on a treadmill for 6 seconds.
A young man is running very fast on a treadmill while being supported by a harness.
A guy is in a harness while running on a treadmill as another man counts aloud.
A young man on a tread mill with a harness runs and the other person counts.
a man with a harness on jumps onto a treadmill and runs on it