(Top two photos) On  Friday, thirty year old Nate Whitman, the 2005 California State Cross Country Mountain Bike Champion, takes a 'Lactate Test', having blood drawn from his finger by Jennifer Ischayeik, a Register Dietitian and Exercise Physiologist  at the Phase IV- Scientific Training and Performance Center.    (Bottom photo) Ron Berry, a physical therapist and trainer puts Leon Henderson, a soccer player and soccer coach, through some drills designed to help Henderson rehabilitate his knee  from a recent surgery.