I think that the stupidest thing that I’ve done is to ride my bike without a helmet. I know that wearing a helmet is really important—but I was feeling invincible and thought that I would be fine. I ended up falling and smashing my head—and I ended up in the hospital for two days. I was really lucky that I didn’t get more seriously injured—and I’ve learned a valuable lesson about the importance of safety. If I had the chance, I would definitely wear a helmet again—because it’s really not worth the risk to go without one.