"but theres a bunch of other really good sweeping that could explain it better than u" i mistyped..wat i emant is thnere are a bunch of better sweepers who could explain this a whole lot better than me..
metalic dude is off..u dont play many arpegios usin up down up down..its possible but very hard.. it is vey hard to do at first but in a couple months ull get used to the weird feeling.. do remember to us ur picking hand to mute the notes after they been swept to stop the buzzing blury sound..practice slow and on the clean channel..that my advice..check out the jonzster..really amazin sweaper