Freaky Facts About Sleep that you Probably Didn’t Know

4. People used to sleep in segments.

Before the invention of electricity, rather than sleeping through the night many people would sleep for a few hours, wake up, read, write, socialize, pray, or reflect, and then got back to sleep for another few hours before waking up for the day (Photo Credit:: iStock).

5. All-nighters are never good.

If you're awake for 16 hours in a row, your mind's ability to function is impaired, similar to the feeling when you have a blood alcohol level of .05% (photo: iStock).

6. Color TV has changed the way we dream.

Prior to color film, only 15% percent of people dreamed in color. These days, 75% of people dream in color (Photo Credit: iStock).