Don’t know about cognitive effects, but it gives me around 10% more strength and a fuller, more muscular look.

If the cognitive effects are real, they aren’t noticeable to me without placebo effect. Meaning, I hadn’t heard any notion of creatine impacting cognitive function and I’ve been taking it on and off for years, and never noticed anything.

Thinking back, maybe an uptick in mood and a mental performance while tired? Purely unscientific, though.