In Robb Wolf's book (Still copies available upstairs), he brings the insights of Dr Kirk Parsley and spends a chapter talking about the importance of sleep and light exposure on our hormones.
So be careful not to just drudge yourself with sedatives or alcohol because it doesn’t bring good sleep or rest but rather just a lack of consciousness.
Here's more on this from the retired Navy SEAL Kirk Parsley...
Doctor Parsley served as Naval Special Warfare’s expert on Sleep Medicine, and has been a member of the American Academy of Sleep Medicine since 2006. He is certified in hormonal modulation (Age-Management Medicine) and has worked as a consultant for the Life-Wellness Institute, in San Diego. Doctor Parsley has lectured extensively on sleep, wellness, and hormonal optimization. He is currently completing a book on sleep optimization.