Train Your Brain for Monk-Like Focus. "Force Quit" Yourself to Get Your Sleep Schedule Back on Track and Avoid Another Day of Fatigue. Your body has to receive triggers as to when it is day & night for your body clock run on.
If you shifted continents, you'd still want to stay up later, faking the day/night cues for your body works. Basically, this means if you have DSPD, having the lights on at night is a killer, which is the opposite of what I want, because I don't want to switch them off when I'm feeling wide awake. But, the lights on are exactly what makes my body think it's still day/early evening etc. There's a theory that a good portion of DSPD people are just more sensitive to artificial lighting than everyone else.
Monitors are especially bad with the blue light. Lifehacker, tips and downloads for getting things done. Start the Day Right with a Morning Routine That Feeds Your Mind.