The neck is probably the fastest responding muscle in the body; it'll grow very fast if you work it directly. ... A big neck looks great; it's definitely one of the most obvious muscles in the body."

Do neck muscles grow?

Our necks are riddled with muscles that help us flex, extend, twist, and turn our necks. When we train our necks, we'll gain size and strength throughout our necks, but most of our results will come from bulking up just two muscles: our upper trapezius and the sternocleidomastoid.

Does your neck get bigger when you work out?

Strength training for your neck will target fat as you burn calories, so you'll see a noticeable difference in the thickness of your neck skin. The extra flesh under your chin will decrease, and while your neck may get even larger, it'll mostly be firm, powerful muscle.