Yes, 30 minutes is a shockingly long time. I'd say 5 minutes makes a lot more sense.
I have a GPS disciplined rubidium clock with a 100MHz output hooked up directly to my sinuses. The slow sensation of waves washing ashore keeps me awake long enough to interact with the rest of you when I am taking my daily luxury 3ms break to read HN. Further, I have a script that, when my break time is over, automatically terminates any conn-