Do you sleep with lights on or off?

i sleep with the lights off, i like the dark, but if i have to i can sleep with the lights on.

I sleep with the out lights

sleep is very much essential for a good health....as Sleep is the state of natural rest observed in most mammals, birds, fish, and even invertebrates such as the fruitfly Drosophila. It is characterized by a reduction in voluntary body movement, decreased reaction to external stimuli, an increased rate of anabolism (the synthesis of cell structures), and a decreased rate of catabolism (the breakdown of cell structures). In humans, mammals and many other animals which have been studied, such as fish, birds, mice and fruitflies, sleep is necessary for life. The capability for arousal from sleep is a protective mechanism and also necessary for health and survival. Sleep is not synonymous with unconsciousness. so sleeping with the lights off is good for the health

Off with the tv on too

I sleep with the lights off but i always have the radio on because i love letting the music put me to sleep.

I sleep with the lights off, and with a sleep mask ON! I also have to use earplugs because I'll wake up if someone so much as walks past my door. I'm a VERY light sleeper...

Off.....I have to have everything pitch black to sleep well...else wise I don't sleep well at all.

I sleep with the lights on and off, its doesnt really matter if it is really on or not.

Most often the lights are off

I sleep with the lights off

i tooooooo like to sleep in dark.

i'm afraid of darkness. when i am alone at home, i sleep with the tv on. when i;m alone in a hotel room, it's both lights & tv on! :P

Lights and TV off.

have you ever slept with your eyes open?

well if it was left up to me they would be on..but unfortunately its not left up to me.

i prefer to off the light

Yes it has to be dark or I can't sleep.

i cant sleep if the lights are on.. i love darkness..

I can sleep either way.

Off, I need it to ba as dark and as quite as possible to get to sleep.