Bad habit of lifting head when attacking..

[Rockin']

Dempsey, you don't have to take my word on this but you are not going to enjoy the tennis ball very much. Use the small towel......

[J.Dempsey]

Great
Thanks guys, will start shadow boxing with a towel under my chin. What a simple but good idea!
Also like the post about balance of your head, didn't think about that but makes sense... I got a big peanut head too so probably why lol