I take my sleep advice from infamous hip hop artist Nas - "I never sleep, cause sleep is the cousin of death"
In reality I sleep 8+ hours and laugh at those who "boast" at how little sleep, or how many hours they work at the expense of other valuable things in their life (family, socializing etc.)
Also, a lot of these comments are about the mid-afternoon/post lunch nap. Honestly I'd prefer to get home to my family a bit earlier, than take a mid day siesta and have to come home later in the evening.
Getting up early and clocking out early are especially tempting given how little daylight we have (Northeast US) this time of year.