you know I never thought about it before...
its kind of one of those things that cant really be described I guess?
I'll take a stab at it tho...
for me it depends on the weed.
my weed (indica) makes me feel very "heavy" like my body is being held down by sand bags, and its allot like when your dreaming... everything feels sort of far away and will require effort to get to.
although most of the weed I BUY is satavia and that fucks me up, I actually enjoy doing manual labor while I'm smoking this shit because I cant feel any pain and it doesn't require thinking, I cant think about complex things for long periods of time on satavia.
lol, if what I just said makes sense to anyone I'd like to know :P