@ Braxton : I hope you solved your problem until now. If this gives you any insight, when I overwork or am too physically tired, I can't sleep. This issue is likely tied to the adrenal system. Fight or flight is the condition in reaction to stress. Stress makes copper levels rise, especially in the brain, relaxing minerals levels (magnesium, calcium and zinc) go down, and this sets the brain on fire, you cant seem to stop your train of thoughts and just relax and let go. When one is exposed to stress for too long and this goes on and on, this is called sympathetic dominance. Then the parasympathetic system, which is in charge for repair, detox and rest, has difficulties to take over. This is a huge reason why so many people are sick and why "detox" is so big in our culture. The parts of the body in charge of cleansing and repair do not function well because of constant stress, so many people are poor sleepers, constantly tired and have underlying toxicity. Unfortunately "detox" is not the solution, but a healthy lifestyle is. The things that the author mentioned here, like blue spectrum light at night, maybe do not fix the problem alone if eliminated, but they certainly do aggravate the problem. The main problem for most people is chronic stress and it throws the body out of whack. Hope this helps, take care.