By Geoff Lepper - With 2,023 minutes already logged and seven matches remaining, San Jose Earthquakes captain Ramiro Corrales is on pace to play more minutes this year than he has in any MLS season since 1999. Did the 34-year-old, who had to take cortisone shots in preseason to relieve his persistent back pain, find the fountain of youth? No, he just got a really good book recommendation from Quakes assistant coach Mark Watson: “Foundation: Redefine Your Core, Conquer Back Pain and Move with Confidence,” written by Summerland, Calif., back specialist Dr. Eric Goodman, who has worked with a number of athletes, including those on the US Olympic water polo team. “It’s been helping me a lot,” Corrales told MLSsoccer.com. “[The back pain] was