Last weekend, my friends and I made plans to hang out. I picked up one of my friends, and we hopped on the bus together. While I was busy replying to a message on my phone, my friend suddenly collapsed. I was completely caught off guard and had no idea what was happening. Thankfully, she regained consciousness after a minute, but I was still in shock. She later explained what had caused it. It was definitely an unexpected and unsettling moment for me that day.