For me:
-iron palm training (done with my pet rock or "dhal lyon pahn")
-"sand stabbing" (with knife hands)
-temperature treatment (hot/cold water/oil/tar/etc...only hot water for me though)
-gloveless bag work
-dit da jow (healing linament...however you spell 'linament'...too tired...)

theres how i do it, im too tired to make any further comments, im gonna go to bed now...bye...
The way of the warrior is a resolute acceptance of death. -Musashi