When you sleep, you dream. Do people dream when they are awake? Does a brain dream when awake?
 
How to find out that your brain is dreaming when you are awake
You remember your dreams. At that time, a researcher emits radio waves to the part that recognizes the image of your brain. He extract the dream frequency from the reflected radio waves. He then emits radio waves to your awakening head. He finds out if the reflected radio waves are mixed with the dream frequency.
 
If the frequency of a dream can be confirmed from the brain, it can be judged that a person has a dream in the depths of consciousness even if he / she is awake. If you can't, then you aren't. In meditation, one can wake up and dream. Therefore, people dream even when they are awake.
 
Summary
People are dreaming even if they don't sleep. The brain dreams for 24 hours. To realize this, people trip with drugs or meditate.