CommonApp - Please elaborate on one of your activities (in 150 words or less)

<p>So I just looked at this prompt for the first time today and did a little brainstorming/stream-of-conciousness. But now that I look back on what I wrote, I'm not sure if it's what they are looking for. Here's what I wrote (it happened to be exactly 150 words lol). It's about my activity of club swimming:</p>

<p>Although I have been a member of Curl-Burke Swim Club since I was ten years old, it was only since my freshman year that I began to practice with the senior group from 4:30 to 6:00 AM. From that point on, my day began at 4:00 AM, where it was still pitch-black, the roads were deserted, and all traffic lights were green. Every day at school felt like the aftermath of an all-nighter. It wasn’t just my head throbbing throughout the school day, but it was also my muscles from the 5000 yards of swimming that morning. It was the epitome of exhaustion. But beyond that pain which was only temporary, I learned that a strict level of discipline flowers self-responsibility. From then on, time management and planning had governed my daily routine so that my days ended at 9:00 PM, providing me at least a reasonable amount of rest.</p>