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The secretion of sex hormones like estrogen and progesterone increases significantly during pregnancy, influencing the regulation of sleep in terms of both circadian rhythms and sleep need. [ 1 ] [ 16 ] Sleep disruption can also occur due to nighttime uterine contractions , which are a result of the nighttime surge in oxytocin levels.
Sleep efficiency (SE) is the ratio between the time a person spends asleep, and the total time dedicated to sleep (i.e. both sleeping and attempting to fall asleep or fall back asleep). It is given as a percentage. [1] SE of 80% or more is considered normal/healthy with most young healthy adults displaying SE above 90%.
The component scores consist of subjective sleep quality, sleep latency (i.e., how long it takes to fall asleep), sleep duration, habitual sleep efficiency (i.e., the percentage of time in bed that one is asleep), sleep disturbances, use of sleeping medication, and daytime dysfunction. Each item is weighted on a 0–3 interval scale.
The Epworth Sleepiness Scale has been used to compare the sensitivity and specificity of other similar measurements of sleep quality. [8] [9] The Pittsburgh Sleep Quality Index is a related scoring tool of sleep quality. Both scores are internally highly reproducible. [10] The test has limitations that can affect the test's accuracy.
3. Stick to a Consistent Sleep Schedule. Having a consistent bedtime routine — going to bed and waking up at the same time each day — might significantly improve your overall well-being.
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BRI scores range from 1 to 16, with most people between 1 and 10, although people with scores of 6.9 and up – indicating wider, rounder bodies – were found to have a risk of all-cause mortality that was increased by up to 49% compared to people having a medium BRI of 5.
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