OK....as a person that use to(notice I said use to) move furniture, I would get leg cramps all the time till a friend of mine said to try the "Fritos and water thing"
What is the "Fritos and water thing" you ask....well, if you start to cramp up eat a couple of handfuls of Fritos(yes, the corn chips) and drink a couple of glasses of water
How does it work, you ask....when you get a cramp, your muscle is telling you that it needs water(and yes, it can happen in a pool)....well, the Fritos have a high salt content in them and your body needs salt to help it retain water....so, by eating the Fritos and drinking the water you are giving the muscle the ability to retain the water that it is in need of and the cramp will go away within about a half hour or so