It' s serious stuff for sure. I was coming out of a creek (on an incline that was nothing compared to what I' ve done in the past) and flipped. It happened so fast, I was unable to kick away. I ended up in intensive care for 10 days and a total of 28 days in the hospital. Fractured every bone in my face and had a trach for about 2 months. Be careful and never ever ride without your helmet.