long days

[spark1390]

Over the past couple of months, I've noticed some people (many of them fellow teenagers) posting workouts that start with something like: wake up at 400, and end with: go to sleep at 2100. While I respect their preparation and envy their discipline, are long days an essential component to preparation to BUD/S? Not long workouts, mind you, but long (18+ hour) days.
I run on an average of 8 hours of sleep and often have difficulty concentrating on any less than 6. All the sleep-deprivation threads here end with 'you can't train for it', but this seems different. I guess because it's not short term near-complete deprivation, but slightly less sleep over a long period of time (six months). It seems like with all the new pains BUD/S brings, working on 2+ fewer hours of sleep than you're used to wouldn't be good.
So, are long days vital to preparation? Should I get used to running on 6 or less hours of sleep? I could use any edge I can get, just wondering what the more experienced guys thought.

[rsctt83]

There is no reason whatsoever to incorporate any type of sleep deprivation into your workout routine. You need to be alert in school so that you can get good grades, that is the number one priority. You need rest to recover from training and that should be eight hours of sleep.

No need to train for 18 hour days and no need to sleep less than eight hours per night. Enjoy your time in HS as it will go by very quickly, train hard and with a purpose but in a way that is sustainable and that makes sense. Use PTG, Stew Smith, SEALFit or whatever else out there you feel is appropriate and stick with plan.