jobo
Grandmaster
on that criteria my 88 yo mother could teach self defence, she spent most of my early life saying" try not to get into so many fights our Joe"There are those people, and they are the best for teaching self defence as they have never needed to use force on anyone, so they either talked out of situations, ran or not got into them in the first place.
And you would rather break bones and cause internal bleeding than cut someone up?