what are self defence techniques?
['Hammer strike. Using your car keys is one of the easiest ways to defend yourself. ... ', 'Groin kick. ... ', 'Heel palm strike. ... ', 'Elbow strike. ... ', 'Alternative elbow strikes. ... ', "Escape from a 'bear hug attack' ... ", 'Escape with hands trapped. ... ', 'Escape from side headlock.']