07-06-2014, 03:04 AM
Yeah 21 hours is too much, when I was doing AM 5.0 I tried to listen a crazy amount every day and I just couldn't sleep because my mind was too active like it was constantly trying to process and I just felt drained.
From my experience I wouldn't recommend any more than 16 hours.
-Ben
From my experience I wouldn't recommend any more than 16 hours.
-Ben