I’ve been on a disciplined ketogenic diet for 3 years now. I had put on weight due to a few persistent training injuries. I lost 22kg fairly quickly combined

I’ve been on a disciplined ketogenic diet for 3 years now. I had put on weight due to a few persistent training injuries. I lost 22kg fairly quickly combined with a return to durability/longevity focused fitness. Anecdotally, I actually feel my cognitive ability has improved. I feel sharper and able to focus better/longer and have been published far more after than prior. However, I have to admit that I need to stay quite well hydrated or else I start feeling slower/foggier, I reckon it could be both diet and age related. I feel like I am fastest/sharpest in the morning prior to a late lunch when my eating window opens. I do eat breakfast on weekends and have the occasional cheat meal approx once per month. Just my anecdotal experience.