@theiconicjoyce__: How to actually grow bigger arms fast with preacher curl. DM me “GROWTH” if you want help with your training. To perform a strict single-arm dumbbell preacher curl keep the back of your upper arm flat against the surface, curl the weight up in a smooth arc while squeezing your bicep. #armsexercise #howtogrowarms #preachercurlform #bicepexercise #bestbicepsworkout