i fell off a horse ! ! ! ! this horse:'(my very first lesson ! it FUCKED me up , too . we were trotting but she was going too fast and i tried to stop her but instead of stopping she decided to go RUN FULL SPEED AHEAD and i lost my balance and fell off .

Based on the preceding passage, answer the following question Why does the narrator have so many large bruises covering their body ?
The narrator fell off a horse .