I'm not sure but all the reviews said, book is great buy book will change your life, but isn't that what all the self help books say.

And this guy said he stayed up for 11 days, the world record is 8 days, is said you will die at 10 or 11 days without sleep.

I read "Ekart Tolles book A New Earth", that was enough for me to help change brain function.

I might read Left in the Dark, but not sure will like it, not being negative but if this guy stayed up 11 days he must be nuts.

I believe in being aware 24/7 but bodies need rest, this is interesting in New Testament, the Apostles while in prison, said they nolonger needed to sleep ( this is not direct quote) I wonder if they rested their bodies, sleeping body but awake aware mind.