That is truly amazing. I'm the antithesis to that...
I lay awake for about 10-15 minutes before falling asleep. I am about as non-wake-up-able as a human being can possibly get.
Same here. I can't tell you how many mortar and rocket attacks I've slept through. Co-workers would say in the morning "But they were loud and shook the he!! out of everything! How did you not hear that?"
Once I'm asleep, I don't hear anything.
Probably not a good trait to have. ;-)