I mean, you aren't hitting PRs every workout. Or at least you shouldn't be if you have been lifting for a long enough time.
I can increase either reps, weight even if only a little, and some improvement. Yes, the odd fallback but, I noticed a drastic decline in output on a fast. I didn't feel strong particularly at the 20-24+ range. For example, on chest day, 20+ hour fast, there was no 3plate bench. it was torture trying to finish. I would add, the analytics were similar to being really under slept. Grante, I am over a year in on intermittent fasting so, I am getting better with it. I'm doing calisthenics, gymnastic ring workouts, bar work, and functional activities. I was pissed with consecutive lock downs but the transition to calis has been amazing for my joints and aesthetics. Intermittent fasting, 8hrs of sleep, calis, and clean eating has been a game changer.