Cotton Travel Eye Mask Cotton Travel Eye Mask. The primary reason that those scientists say you need darkness for good sleep is actually evolutionary. Humans—and our pre-human ancestors—are naturally diurnal, meaning we’re awake during the day and sleep at night. For thousands of years before electric lights allowed us to keep working or socializing late into the evening, humans naturally slept while it was dark and were awake during the day. Our brains are hard-wired into associating darkness with sleep, and they produce more melatonin (the hormone that controls our sleep and wake cycles) when they sense an absence of light. In addition to increased melatonin production, scientists have also linked dark sleeping conditions to increased time in REM sleep and decreased wakefulness—meaning you’re more likely to sleep deeply and to sleep through the night. And they’ve found these benefits with sleep masks, not just in dark rooms. Features: Cotton Travel Eye Mask | Sleep Masks This eye mask can relieve eye nerve and vascular pressure, let blood circulate more smoothly. Help to eliminate fatigue, improve sleep environment Lunch break, night sleepwear will do good to eye care Suitable for travel, computer users, students, the elderly, and office workers with heavy pressure, etc. Material: Cotton and polyester Size: 19*9.5cm ( Approx. ) Color: as shows Qty: 1PC Cotton Travel Eye Mask Shop More:shopmart.com.bd cover your eyes while you sleep to block out ambient light Benefits of Sleep Masks They’re cheaper than blackout curtains. … They improve your sleep quality. … They might help your insomnia. … They’re safer than medication or alcohol. … They might help prevent dry eyes. … They can be good for your skin. … There are lots of kinds to choose from. Wonderful Wallet