Physical sleep restores the physical heart and brain so that they can fully reflect the thoughts and feelings that pass into them from the psyche (soul).
The astral and mental bodies do not need sleep in the physical manner, since they are restored by a different type of energy.
Furthermore, you are always using the astral and mental forms: when your physical body is asleep, you use them to dream. When your physical body is awake, you use them to think and feel emotion.
“Nothing is easier than self-deceit. For what each man wishes, that he also believes.” —Demosthenes
"Do not worry; cultivate the habit of being happy." —Samael Aun Weor