In his head

A.J. Green's endurance tests revealed that his hydration levels were too low -- something he'll have to take care of before game day. Rob Tringali for ESPN The Magazine

This story appears in the June 27, 2011 issue of ESPN The Magazine.

Despite the uncertainty about the upcoming season, rookies still have to get ready for life in the pros. And that's just what A.J. Green, this year's fourth overall draft pick, did on a recent visit to the Gatorade Sport Science Institute in New York, where he learned how to prep physically for the rigors of the NFL. After the Gatorade folks poked
his body, The Mag prodded his brain, subjecting the 22-year-old Bengals wideout to our "Psyche Scan."