I have never fallen while running, except in Texas on a trail. I wondered if I would break a wrist or hit my face. Turns out I slide like a volleyball player. I ran on a sidewalk I hadn't been on before. I was looking at the nice trimmed yard and caught a raised up edge of the sidewalk. I was down on the ground before I knew what was happening. Ouch! Thankfully I was wearing gloves so my hands were protected. My favorite leggings were ruined though. I guess I will be making them into shorts.