What triggers someone to wake up from sleep?

if its not from noise or physical things. your body is telling you you need no more sleep so get up

kelbat on November 26, 2009, 1:16 am

sleep duration is controlled by inner timekeeping (circadian clock)

lofi on November 26, 2009, 3:11 am

I think I just said that in laymans term

kelbat on November 26, 2009, 3:20 am

Gun shots.

MrsCullen on November 26, 2009, 7:26 pm

I use the same techniques as Wallace & Gromit.

punched on November 28, 2009, 10:29 am