preach on, brother!

So true!

I hope they didn't goof and cite the soldiers' BMIs, which should be higher than the average citizens'.

I was SO right!

CentACS reports that "studies show that the length of sleep is not what causes us to be refreshed upon waking. The key factor is the number of complete sleep cycles we enjoy. Each sleep cycle contains five distinct phases, which exhibit different brain- wave patterns. For our purposes, it suffices to say that one sleep cycle lasts an average of 90 minutes:

* 65 minutes of normal, or non-REM (rapid eye movement), sleep
* 20 minutes of REM sleep (in which we dream)
* Final 5 minutes of non-REM sleep.