I always hear about potassium, but I have no idea if its a good thing before/during/after excercise, if its terrible and makes you cramp, or what. I just hear it mentioned every now and again it seems. I know when I ride though theres always a few bananas in my pockets (insert 3rd grade jokes here) and I am wondering if its good or bad to be eating a lot of potassium? If its good, when does it do the most good? Before or after a ride?