used to cramp spectacularly very often during martial arts training (back in my capoeira days) a classmate told me it could be a lack of salt. started taking some salt and water before training, and no more cramps.

now I like orange flavoured Tang with salt added in. I just use some 'pan salt' that was lying ard the house. was lousy for cooking (hard to season properly coz it was low sodium and not salty enough u had to add quite abit) but apparently has extra minerals, so good for a home-made sport drink.

peanut m&ms are great while riding...