After a long run, my feet can be quite achy. Aside from complaining to my husband a lot, I usually just deal with it. However I recently discovered a fabulous and easy technique for massaging your sore feet, and all you need is a tennis ball [1].

Here's what you do: While seated, place a tennis ball under the ball of your foot. Roll the ball back and forth under the arch of your foot several times. Use as much or as little pressure as is comfortable for you. I usually do about a minute under each arch.
That's it. I promise it will ease those tired feet. Also, if you know you're going to be walking a lot on your next vacation, throw a tennis ball in your suitcase. Feet ache after a long day at work? Keep a tennis ball in your desk for a mid-day massage. Try it and let me know what you think.