Approximately 80% of all dreams are in color—the rest are in black and white.

A NASA study found that while a 15-minute nap might not make you feel physically better, it still boosts cognitive performance.

Going to sleep at the same time every night increases your chances of achieving a good night's sleep.

A survey found that 23% of married or cohabitating couples slept separately on a regular basis, mostly due to snoring.

Sleeping on the job is acceptable in Japan. It is viewed as exhaustion from working hard.

True-see here

A sleeping human brain can still understand the words being spoken around it.

True - see here

Daydreaming is good for your brain.

Sleeping on your stomach gives you sexy dreams

True - see here

The hormone that makes you grow is only produced when you sleep.

Fasting for 16 hours will reset your body’s natural sleep/wake cycle and is considered an effective way to overcome jetlag.

True - see here

It takes an average person 7 minutes to fall asleep.