now, the following question will only apply to those who meditate daily, most-of-the-time, and can sustain their state up to an hour,
as you progress beyond this point, can meditation take the place of sleep since the state you sink into is similar to lucid dreaming?
according to Bruce O’Hara it takes two hours of meditation to replace one hour of sleep. But be aware that sleep and meditation compliment each other. When you sleep well, it helps to meditate better. And meditation enhances the sleeping experience in more than one way. During meditation the serotonin levels in your body goes up, (low serotonin levels are linked to insomnia and depression), so those who meditate regularly sleep better. Long story short, Meditation increases the REM sleep.
I won´t go into the reasons for not doing it because volumes could be written about it…simply do some research about people who are very good at meditating and you´ll find none of them do not sleep no matter whatever level of skill they have.
Also, instead of working toward that goal of not sleeping, ask yourself why you want that and work there….I´m betting you won´t even have to do much work, you don´t really intensely desire it soo…don´t waste time in that direction but keep improving in your meditation :P