One of my staff does this every day of his life. His roommate works with us as well and confirms it. Dude will game until 10am, then crash for a couple of hours and be into work at 1pm. Rinse and repeat. Five days per week. Rolls out of bed with ten minutes to spare, throws on his uniform and starts walking. I don't know how he survives the lifestyle, but I guess it's working for him.
I agree with this 100%. Let the kids have their fun while they still can. Life will catch up and they will learn it's not feasible to maintain. They will either adapt or fall behind. If they're doing their work now, no harm.
I used to do this when I was below 30 and it works pretty well for a time. If you work and have a family, this is the only segment of time you can carve into, to create more time for yourself.
One thing to be careful about though- there is growing evidence that not getting enough sleep earlier in your life like this can lead to dementia when you're older.
I go to bed at 9 and wake up at 6 and im still fucking tired.
Well, might as well get 6 extra hours of gaming in!