(...absolutely nothing - say it again hu-hah!)
Or are they? I occasionally wake up in the middle of the night with an extremely painful cramp in my lower left leg. Funny, because I hadn't had one for a while, but less than a week ago I spoke to Lasse about it, who gets them more frequently, and presto - last night I get brutally torn from an otherwise pleasant dreams about this here gir... well thats not important right now. So there I am - 3.48 am, suppressing the urge to scream out the pain. And it takes about 5 minutes to settle down enough, that I can slowly start moving again. Worst case scenario it can be sore for days after.
So - what ARE they good for (if anything at all)?