At the end of last year and early in Jan of this year, I tried creatine. First go around was 5g/day in the AM with breakfast. Within a few days I was definitely feeling more power in my legs on short, hard climbs, and setting recent PRs on Zwift segments. Heck, even climbing the stairs felt easier, lol. The problem was that just inside of two weeks after starting supplementation, I started developing severe insomnia. It turns out that insomnia is a relatively rare, but real side effect of creatine supplementation. After a week of very poor sleep, I discontinued the creatine, but then suffered through incredible fatigue for a week - which turns out to also be a common side effect of stopping creatine. A month later, I tried taking creatine again, with a lower daily dose of 2-2.5g, also in the AM, and ended up developing the same insomnia, perhaps a little less intense. At that point I decided to pull the plug on creatine, because although it absolutely worked for me in terms of muscle strength, with minimal water weight gain, the insomnia was not something I could deal with. If it has not been for the insomnia, I absolutely would have kept taking it.