[LarryMade2]

Well I read a lot of folk being more alert and loosing weight. How about mental capacity, some diets kinda turn my brain to fuzz... As a computer geek, if you program, relate how your coding/problem solving faculties are doing.

Second would be strength.

[yzzxy]

Maybe using Luminosity or similar software, and charting your progress against others with similar entry conditions (IQ, spatial reasoning, whatever their metrics are)