52. got 7.25 in wrists so my forearms arent gonna grow much now. ive done physical labor for years and years, my hand strength is good, endurance good....just cant get em sore. maybe if i spend an hour on em.....How old are you, genetics play a role but forearms generally come with age and years of training, in general bc they are repetitive motion muscles like calves the body generally doesn’t want them big just strong so volume volume volume and if you’re not getting a pump then you’re likely not growing. Keep at it I bet they grow.