No wonder she can’t sleep!
Circadian rhythms are a sleep-wake cycle made up of all the internal biological activity you have in a 24-hour period, including these:
- physical, mental and behavioural changes
- variations in the environment
- waking and sleeping
The major variation in your circadian environment is the amount of light you get. Before the introduction of electric light, the natural dimming light of evening triggered the production of melatonin, the sleep hormone that makes you drowsy and ready to sleep.
Our circadian rhythms are very sensitive to light. Many modern-day evening activities, such as watching TV, working on computers, smartphones and pads and being in bright indoor light, can throw your circadian rhythms off-kilter. The light delays the production of melatonin, so your body doesn’t get drowsy and ready for sleep.
To learn more about how to get a great night’s sleep, get your copy of “Sleep Secrets”.
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