There was a time when women’s tennis was more of a social event of polite outings in long white dresses than the intense competition you see on the professional women’s tour today. If you’ve seen some tennis match films from many years ago, the game seems almost cordial compared to today’s aggressive female tennis play. [...]

Have you ever played a real tough match only to wake up the next day with killer stiffness and pain in your sides and your hips? You can’t really understand the pain unless you’ve experienced it, but it feels like real work just to get out of bed and lift your feet off the ground. The pain is caused by a build-up of lactic acid in your muscle tissues.