[rookie]

I have had slight nagging neck pain for a long time now. I went to a chiro a while back and that was not making a difference with twice weekly visits. She saw nothing out of alignment or any issues.
Her only theory was that I was so into working out that I was developing everything from my neck down but doing nothing for my neck. The when I did pull ups and chin ups I was creating strain along my neck causing pain. (That is what causes the largest amount and most painful times for my neck, often leaving me sore for days)
So, if this thoery is correct, or even if it isn't, what is a good resource for doing some neck exercises and specifically strengthening my neck. I figure even if it is not related to my other weight lifting doing some neck work can only help.

Thanks.