Every now and then at climbing competitions I'll need to do pull-ups while my head is looking to the left or right. I've hurt my neck a couple times doing this. I get a muscle strain or pinched nerve in the back of my neck which hangs around for several days.
I've always heard that you should look forward or up while doing pull-ups to prevent injury. If I start practicing pull-up sets with my head turned to the side, am I going to build up a tolerance to strains or just create further injuries?