What do you think..

[Somenoob]

Has positive effects on the mind? the only activity i can think of is reading.

[GuitarHero]

How about listening to music? Looking at art? Getting into discussions? Math? There's tons of pro-mental activities. Playing brain age on my ds i smy favorite, except for music.

[Cyraxzz]

Anyting, just as long as it has a mathematical value which of course subjects like music and reading has.

[Boomy]

music, art, aquariums, social interactions, certain drugs perhaps, sex, sports, hobbies, meditation...