The debate over whether a helmet really matters or makes a difference or not is something that’s more confined to the roads than the trails.
Mountain biking is dangerous, and you generally won’t find many regular riders going up in the hills without a helmet. They could just save your life one day, and the frankly quite terrifying video below shows exactly that.
The footage shows a rider flying over his handlebars after taking on a jump and being knocked unconscious in the Surrey Hills in England. Tim Rowsell, a rider waiting at the side of the trails is quickly there to help and tells the friends to call 999 immediately.