I think the problem is more the fact that in 10 minutes you're just getting into your REM sleep (the deep sleep) so if you jolt yourself out of it instead of waking up on your own, then it screws you up.
(OneBlazeofGlory, is it a bad thing that whenever I see your name, mentally, I heard Adam Pascal go, "One blaze of...GLOOOOO-RYYYYYYY...find....etc..."?? Litereally, it plays in my head EVERY TIME I see your name.)
"It's not always about you!!!" (But if you think I'm referring to you anyway, then I probably am.)
"Good luck returning my ass!" - Wilhemina Slater
"This is my breakfast, lunch and f***ing dinner right here. I'm not even f***in' joking." - Colin Farrell