[sidm83]

I found these critiques soon after reading the book. However, there are many other researches cited in the book and I would take them on face value for the not very scientific but somewhat valid (for me) reason of personal experience.

I got into the habit of all night slogs right since high school and it persisted till recently due to the pressure of sticking to deadlines. So I could relate well to several experiments cited in the book.

Considering we do not know nearly as much as we ought to know yet, I would rather err on the side of caution and give far more importance to sleep than I have previously.