i found that too panterica about standing up, i never tried till the other day and i was like 'woah, wtf? this is dumb!'. but yeah i dont usually practice so to speak. i learn a song every now and then, but otherwise im just sitting watching t.v. or chatting or fiddling with the amp just doing crap [all of this while simply playing casually with the guitar]. BUT - just doing this i realise i get better. i think back to like fortnghts and months and think hey ive gotten that bit better.
so there you go :P