Your internal clock, or circadian rhythm, is closely connected to many forms of insomnia. Contrary to popular belief, circadian rhythm has more to do with the levels of light than the time of day. This internal clock is what tells us when to go to sleep, and when to wake up in thew morning.
It is this internal clock that is known as the circadian rhythm. Hormones secreted through out the day are governed by this internal clock, and so are body temperature and our level of mental alertness.
Since the circadian rhythm influences alertness and our energy level, for those with have a sleep disorder related to their circadian rhythm, their internal clock is “off” and they tend to feel alert when they should be tired or sleepy, and tired when they should have much energy. This is very common for those working the grave yard shift.
One of the biggest factors in regulating your circadian rhythms is how much exposure you get to very bright light, especially sunlight. When you don’t get enough light over a long period of time, such as during the winter, you may notice that you tend to feel more fatigued or have less energy when compared to the spring and summer.
The most common way to help correct sleep disorders related to your circadian rhythm is to use special forms of light therapy to slowly reset your internal clock. Using light therapy is a very simple process. It requires the proper lightning and about 30 to 60 minutes of your time every day in conjunction with following a strict sleep regimen. The light used for this form of therapy is usually delivered using a special device known as a light box. Light boxes in most cases use specialized fluorescent light bulbs that have a LUX value between 5000 and 10,000.
To be successful with the light therapy the most important aspect is to time the light exposure correctly.Proper timing will be based on not only your schedule but also the type of insomnia.
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