are you awake?: blue light special

Blue light special-
Blue light resets body rhythms for sounder sleep, higher alertness,Harvard Gazette, 2003

When light has you singing the blues:Blue light outshone white in a Harvard University experiment to find better ways to reset our body clocks.

"After 6.5 hours of exposure, blue light readjusted their body clock by 3 hours, green light by about 1.5 hours. If you normally feel your eyelids getting heavy at 11 p.m., a 6.5-hour dose of blue light might keep you alert until 2 a.m. If a change in shift leaves you sleepless at 4 a.m., blue light might help you sleep three hours longer. (Which way the shift goes depends on when the light exposure takes place.)"



"Our study opens the door to both understanding how humans and other organisms adjust to the planet's rhythms, and how we can practically align our internal time to the demands of a 24/7 society."