Introduction:

The last post in this series discussed how light influences your circadian rhythm, and the health effects of blue-light exposure during the day and its negative effects at night (which was discussed in Sleep Series Part 2). This post will look at the effect of the hormone cortisol and how it gives us energy and focus through the day, and then drops off and allows us to relax and sleep properly at night. Let’s take a look at cortisol! Continue reading Sleep Series – Part 4: Cortisol and Sleep →