Turn your head to the left and now to the right. Is there pain? You see, neck muscle spasms can lead to poorer blood supply to the head and everything inside it because all the blood vessels to the head pass through the neck. And if the neck muscles are overstrained, blood flows worse to the head and drains worse from the head. This can cause headaches, deterioration of memory, vision, and hearing, and increase the risk of strokes. To prevent all this, do self-massage and neck exercises daily. Remember – you can improve your health on your own.