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Sleep apnea is a common yet serious sleep disorder where breathing repeatedly  stops and during sleep. This condition can lead to fragmented sleep and low blood oxygen levels, causing daytime fatigue and other health issues. But did you know that light exposure plays a crucial role in managing sleep? Today, we'll uncover how light influences our sleep patterns and how it can help—or hinder—our sleep. 

Circadian rhythms are physical and mental processes that fluctuate across each daily 24-hour cycle. The 24-hour circadian rhythm is important because it helps us be alert during the day and ready for sleep at night. It also influences our digestive systems, hormones, and even body temperatures. 

During this rhythm,  the brain releases specific hormones based on the signals our brain receives  due to temperature and sleep environment ,and even light. 

Not everyone’s circadian rhythm is the same. For people who are “night owls,” a normal daily rhythm involves staying up at night and sleeping late in the morning. Other people fall asleep soon after dark and are up with the sun. These people are known as “early birds” or “larks.” 

Variations in circadian rhythms are referred to as chronotypes. Research suggests that chronotypes are likely based on factors like age, genetics, daily light exposure. If you’re interested in learning your chronotype, you can take a quiz and find out how chronotype affects your sleep-wake cycle. 

Take the Original Chronotype Quiz (sleepdoctor.com) I just found out my chronotype is a lion- maybe you are too- or maybe you are a dolphin or  a bear. 

Altered rhythm and signals can  cause changes to your metabolism and sleep quality 

An affected circadian rhythm could also lead to sleep disorder.

Morning light exposure, turning off electronic devices 1 hour before bed, a cool and dark room, comfortable bedding and regular sleep schedules can help maintain healthy sleep and a healthy circadian rhythm. 

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