Frozen Golf Balls

I read about this tip in Runner's World and tested it out today. Put two golf balls in the freezer and leave them overnight or all day. Take them out and roll a ball under each foot. I stood on one foot and rolled the other foot over a frozen golf ball and then switched for a while, but I found that sitting down and rolling both feet simultaneously gave me the right amount of pressure. My arches have been bothering me lately and this was a great way to give myself a foot massage without having to touch my own feet, and the coldness helped with some of the discomfort I've been feeling. I actually tried this out this morning before I put the golf balls in the freezer, and it didn't feel nearly as good.