The Vikings want Brett Favre to develop chemistry with his receivers, but don't want to overwork the quarterback in the process. "[We're] just kind of a ramping up," coach Brad Childress told the Star Tribune on Sunday. "You have a tendency to get on it a little bit harder with coaches around. I think by his own admission, he probably threw 200 balls in the Jets first day of practice and probably set himself back last year. With the fans and the crowd and trying to throw deep, showing off a little bit. So you have to make sure." Minnesota needs to be extra careful following Favre's offseason surgery to repair a biceps tendon and his admission that he has a torn rotator cuff in his passing arm.