Quote: "in kung fu classes the instructor will walk around and beat you and your classmates with a stick...to build up your "resistance and tolerance""
they did that in Ju-Jitsu too, while teaching you to do the splits; ours would come around and just knock our legs away. Amount of time my face smacked the floor was ridiculous.
Another favourite he was was with weighted containers... Buckets, Bowls, Cups, etc. with water in them; you'd have to strike one of four key poses mostly involving squatting for as long as possible.
once you get over the initial number of times of doing that, he'd then come around with a stick tap the backs of your calfs and such. you'd be walking funny for a week afterwards but you eventually got used to it.
it's the same with most things they taught though, you learn correct techniques to take a hit before you'd actually be taught how the hell not to be hit in the first place. or maybe the teacher we had was just sadistic heh
you should always be taught not only how to do a move, but how to block, dodge and react.
Reacting doesn't always mean stand there and asking someone to punch you in the face
but it does mean that you learn rather than to avoid something to take it in a way that won't hurt as much; with training you can learn to phase out quite a bit of the pain from entire blows.
I mean again the example above of 'blasting you abs' so they're strong. Someone who has developed abs doesn't needs to dodge someone hitting them, simply tense them at the right time. To the person attaching it's like hitting a brick wall, to the person taking the blow it will sevearly disappate most of the effect.
It isn't always a good thing to constantly be dodging in a fight, sometimes it is better to be able to take a blow to provide you with the oppertunity to strike back.