You have taken rest in the night so Lord Most High says that now recite some long and detailed Verses (tawaal-e-mufassal) in the Morning Prayers. It takes around 17 minutes to do that. Thus the Morning Prayer time should be kept around 35 minutes before the sunrise. Thus is there is a need for repetition then that too can be managed in time.
(Sitting on Monday, September 27, 2010)