We all know that we need to sleep in the dark. But what’s been less appreciated until recently is that teeny tiny levels of light at night while we’re asleep can have profound effects on our metabolism.
Taking the time to make your sleep sanctuary truly dark is one of those 1% marginal gains that will have positive ripple effects on your health. So get those black out blinds, get rid of the electronics, and cover up any stragglers.
The benefit of getting your environment optimized for something that you for 1/3 of your life cannot be over-stated.