One often overlooked part of the arms is the forearm. Everyone makes a big fuss over the biceps and triceps but if you ask me there’s nothing more impressive than a pair of gorilla forearms.
Forearm curls are performed the same way as bicep curls the difference being that you’re only bending at the wrist. The key to doing this exercise is to perform the curl slowly, controlling the weight all through out the motion.
These 3 exercises helped me get big arms and I’m sure they will work for you too