After spraining an ankle during a marathon, Jean continued to the finish line since she decided prior to the race that nothing would keep her from finishing.
Perseverance means persistence in doing something despite difficulty or delay in achieving success. After straining an ankle will she was running, she still continued to the finish line. Her sprained ankle is making it more difficult, but she is still persistent to finish. She is exhibiting perseverance in the face of struggle.
I'm not sure if you meant baking or biking but if you meant biking then it basically means it's unsafe and one you get in an accident your brain would uh fall out so yea.