Why are we not able to wake up for Fajr?

[Bilal]

http://www.jannah.org/articles/fajr.html

Why are we not able to wake up for Fajr? (and some helpful tips)

Our Prophet (sallallaahu-alaihi-wasallam) is our exemplar who
provided the best example in spending long hours of the night in
prayer and waking in time for Fajr Prayer. This record was
authentically known of him both in his teachings and his living
example as he did not like sleeping before Ishaa [night] Prayer
and discouraged his followers from useless talk after it.....................

[Nu7]

Did the Prophet (SAW) sleep before fajr or did he (SAW) stay awake from isha to fajr?

[Bilal]

akhi the following link indicates fiqh us-sunnah by sayid sabiq a supposed collation of the mathaahib. it shows through narration that rasoolullah saws used to sleep after isha salat and rise for tahajjud. wallahu'alam.

http://www.jamaat.net/ebooks/Fus/fus2_14.html

['Abd al-Kareem]

Did the Prophet (SAW) sleep before fajr or did he (SAW) stay awake from isha to fajr?

He (صلى الله عليه وسلم) would sleep some portion of the night mostly. If someone wished to see him asleep during the first, second, or third part of the night, he could do so. And if someone wished to catch him praying during the first, second, or third part of the night, he could do so.