Matt on "right arm tension"

whenever i practice or am picking, i generally find that my right arm tenses up a little bit; not so much to make it impossible to play, but enough to notice that i relax after practice. even at slower tempos, i find i am slightly tense.
the reason this concerns me is that 'shredders' (who have phenomenal technique) seem to advise being completely relaxed, and i, for some reason, feel like i should be technically perfect.
my question is if i should slow down to a ridiculous tempo and relearn my technique, or i should (by other means) correct this problem or ignore it. thanks for any insight.