Neck Muscle Strain from Overuse

Overuse of the neck muscles is a common reason the back of the neck can hurt. 
Repetitive motions, like looking down at a desk or carrying heavy items, can strain the muscles in the neck, leading to pain. This kind of strain can make the neck hurt and feel sore. Taking breaks and practicing good body mechanics can help reduce neck pain from muscle overuse. Stretching regularly and avoiding long periods in one position can prevent neck pain and keep the muscles from hurting as much.