I’ve been doing this for a few years, but decided, hey why not check it off as something I’ve done! Not only do I think this is “worth it” but I feel that every girl/woman should track her cycle from the moment she starts. Obviously not everyone does that, and I didn’t track mine from the start either, but I would recommend for women to do so. It really helps with gyno visits, predicting your next period, knowing when you are fertile, and just knowing your body. Lately I’ve also made marks when I experience pms type symptoms like strange mood swings and food cravings. It’s definitely been interesting, and helps me calm down during said mood swings, since I can look at my chart and say “see, this is just pms, things are ok.”