Just measured the circumferance inline with adams apple my neck is 16", around 3 months ago before i started neck training it was only 15" lol. Im making progress baby, the rumor about neck being the fastest growing muscle must be true.
I attatch 22.5kg to the head harness and do 10 reps for 5 sets once per week, when i first started i was using 15kgs. I think the gains will slow down now though after the initial adaptation..
my goal is 18-19".