Your circadian rhythm is a 24 hour cycle that is affected by sunlight and temperature. Normally, you get sleepy at night because your body naturally drops in temperature and blue light exposure is reduced. Reduced light exposure means increased levels of naturally occurring melatonin. Melatonin makes you sleepy.
Blue Light Blocking and Sleep
In a recent study, participants wore blue blocking glasses 3 hours before bedtime for two weeks. Results showed a 58% increase in night time melatonin levels. Also per sleep questionnaire, participants slept better, fell asleep faster, and increased sleep time for 24 minutes. How many times have you hit the 5 minute snooze button?