find a light weight with a hole in the middle ,put a belt (or thick rope) through the middle of the hole ,,lay on the bed with your head over hanging face up,,put a small towel on your forehead ,,put the belt on the forehead with the weight hanging & then move your head up & down you only need to do about 10 to 15 reps in one day ,,,,
Thanks buddy. I saw a video of Canelo with a kettle ball inside a towel. He was lifting the towel with his mouth to strengthen the neck and jaw.
You could get one of those leather neck harnesses that you see Floyd Mayweather using a lot [ame]http://www.youtube.com/watch?v=UWnmzsSFpZw[/ame] (at 1:41) They cost about a tenner.
i suggest getting the harness. The towel is alright but can be uncomfortable, also you cannot strengthen your jaw. Its a bone, but instead u can strengthen ur neck to be able to keep solid once u take a hard shot
