u/TheArcanist_1

For fuck's sake, it's gonna hurt like hell while you do it cause your palms are one of the most sensitive parts of your body, it's gonna hurt like hell afterwards and take a while to heal cause your palm bends all the time, and it's gonna make your hand useless for quite some time which is unsurprisingly a very fucking bad thing. There are so many better places to cut, if you need a lot of blood cut the underside of your forearm, it's literally right there, has exposed veins, doesn't bend, and you can just wrap it in bandages afterwards and let it heal. If I needed my blood for something the last fucking place I'd consider cutting would be the palm of my hand.