As Michaeel Vick Michael Vick’s friends are quickly finding out, and as Marion Jones has painfully shown us, there is truth to the old adage that we should ‘pick our friends wisely.’ Well, recent research may indicate their our friends can do more than just bring out our character flaws. A new study out of the Harvard Medical School indicates that who we associate with may determine how fat or lean we are. While the findings are a little controversial, there is certainly some truth to the findings and might explain why obesity is growing exponentially in the U.S.