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I've gone down 3 times twice with some speed.
Once taking a corner too fast for my tires 70mph old with little grip (first bike) broke a thumb skinned a couple fingers.
Once at about 10 mph wet one lane covered bridge car came on touched my brakes and went right down hard. bruised knees
Once driving too fast 75 to 80 mph(see a trend here) on a road i wasnt familiar with. Driving up centerline on a hill and wouldnt you know it the road turned a sharp right at the top. went into a field on the opposite side of the road flipped bike end over end 3 times crushed by bike each time. Not sure extent of injuries didn't go to doctors(thought they might want to operate on my back). back shoulder and chest hurt real bad. This was around 10 years ago and my arms still go numb and hurt sometimes when i sneeze.