[Hansi]

"I can party until 10am and drink all night without getting a hangover (I would puke all the time when I was younger).

I can function perfectly after having slept for just a few hours."

I'm 27 too but don't think this is reflective of most people our age. I don't get hungover often but my friends complain about it quite frequently. And I simply don't function without enough sleep so no partying till 10am, I can survive on 6 hours of sleep but prefer 8 for optimal effectiveness.