Originally Posted by crucifissio

I am 44 years old, I have been in martial arts since I was 10 years old and I am advising you to run unless you are prepared to take some serious damage...there is no reason to fight somebody with a knife if you can run away...if you can not/will not run away and you have no experience with fighting you will probably get stabbed several times...if the guy with a knife is a big dude then you will get extra stabbed...

as for practical advise, run away and find a rock or a big metal pipe...if not be prepared to take a stab/cut in your hand whilst blocking the stab and try to deliver a super human elbow to his head with the other arm, if you land the elbow follow up immediately (less than 1 second) with another elbow to the head and repeat until the opponent drops, your only advantage is the temporary daze from a surprise elbow and it lasts for only a few seconds...season the attack with multiple kicks to the groin, try to lift the opponent off the ground with your kick to the groin, this is how hard you should kick...if/when the opponent falls follow up with jumping on his head until he stops moving...