I was training my mustang mare, Sierra, earlier. She needs a lot of work done and I started over the weekend. So far she hadn't even offered to buck or spook at anything and I was feeling fairly confident. She was a but stubborn at first but we got going alright until something caused her to freak out. I held on as long as I could but my balance isn't always the best. I fell on my back and hit my head pretty hard. My foot and shoulder took a good bit of bruising but I made it through.