[jerf]

I tried creatine out for a while. It definitely had an effect on me; previously I tended to tire out in my strength workout prior to really pulling the muscles and I tended not to have to be too careful about that. Creatine allowed me to workout longer without realizing it, to the point that I was in some pain for the next several days on those muscle groups, rather than "maybe sorta sore the next day for a bit".

Whoops.

With a bit more work I was able to tune myself to stop that, but it didn't buy me much.

In the meantime I noticed no cognitive effects strong enough to be noticeable without full-on Gwern-style careful testing. (My policy on that is that if the power of the result isn't big enough for me to notice in "normal life", I'm not that interested.)

I can believe that dedicated athletes can use it to good effect but I don't think I recommend it for casuals such as myself. I also definitely had to be extra-sure to drink more water than I felt like I needed or I would get dehydration headaches.