Why Light Interrupts Your Sleep
Doctors agree, simply wearing a sleep mask can dramatically help improve your “sleep” and maximize your rest for optimum health and more productive daily activities.
When you eliminate artificial light in your room, your body begins secreting the hormone melatonin that plays a critical role in when you fall asleep.
Exposure to light stimulates a nerve pathway from the eye to parts of the brain that control your hormones, body temperature and other functions that play a very important role in making you feel sleepy or wide-awake.
If you get too much light, right before bedtime it has been proven to prevent you from getting a good night’s sleep. In fact, one study recently found that exposure to unnatural light cycles may have real consequences for your health including increased risk for depression. Regulating exposure to light is an effective way to keep your circadian rhythms in check and getting a better nights sleep.
Source: SLEEP: A Very Short Introduction© Dr. Steven Lockley, PhD & Russell G. Foster, BSc, PhD, FRS, 2012.