HE experiences the same G-forces as a fighter pilot and runs the equivalent distance from Burleigh Heads to Surfers Paradise while clocking speeds in excess of 30km/h.
Titans hooker Nathan Friend has long been regarded as arguably the hardest working player in the NRL.
But now the Bulletin has uncovered the science behind the statistics, with exclusive GPS data revealing the strain placed on the gutsy No.9 every time he plays.
Friend wore a GPS device under his jersey against the Penrith Panthers last week at Skilled Park and the results were astonishing. During 80 minutes, Friend ran 10.65km with a top speed of 8.5m a second, while his heart rate peaked at 190bpm.
But the most amazing data came from the magnitude of the collisions.
Friend experienced 74 impacts above a G-force of 8, which is higher than that felt by a Formula One driver (5G) or an astronaut (7G).
"In terms of what it would do to a regular person, well most people wouldn't get up," said Titans strength and conditioning coach and Bond University assistant professor Chris McLellan.
"Basically these guys over the course of the season get conditioned for the collision.
"It is not something normal people are accustomed to.
"In terms of Friend being the hardest working man in the NRL, it would be impossible for me to know because I don't know what every other player is doing.
"But he is covering the most ground by far for us and he certainly had the highest number of collisions. He is topping out all of our categories in terms of the number of sprints and his heart rate, because let's face it, he doesn't stop."
The GPS devices are fitted with an accelerometer, which uses satellites to determine change of velocity.
"Impact data is obtained from being tackled and tackling, but also tackle breaks and say if you are already in a tackle and someone else jumps on top of you," said McLellan.
"It is the same as the GPS in your car, it tells you how quickly you are moving and how quickly you stop and then gives you the G-forces.
"It gives us a good indication and we use it as a monitoring tool."
Friend is renowned for his high workrate, which regularly includes nearly 50 tackles a game, most of which are made bringing down opposition big men.
"I have been used to the contact since I was six years old," said the reigning Paul Broughton Medallist.
"We took part in a study last year to measure our bone density at Griffith University.
"It showed our bones are probably twice as strong as a normal person.
"Obviously if a person walked off the street and into one of our battles they would feel a fair bit more sore than we do."