ok so i've seen loads of people talking about how they create a super loose fist, aka only the two end joints of their fingers are bent and not their knuckles. when i try to do that shape it genuinely aches all the way down my arm, so i instead make an actual fist (minus the thumb). i can get quite a bit of speed from it but i'm just wondering if it'll affect my performance at all and if i should fix it before i go any further and have bad habits in the future?