The Secret To Better Sleep Maybe In Your Genes
Sleep is a behavior that occurs across the animal kingdom.
Even bacteria are known to have active and passive states?that correspond to the sleep cycle of our body.?
Major discoveries over the last couple of decades proved that sleep comes with a host of health benefits.
Sleep gives our bodies the opportunity to rest and recharge ourselves. During that time our body also focuses the energy on?healing, detoxification, and repair processes.
Without this, our system will be subject to constant wear-and-tear with no opportunity to relax and repair itself appropriately.
What are the different stages of sleep?
The two main stages of sleep are:
NREM and REM occur in a recurring fashion every 90 minutes.
What is NREM?
The main aspect of NREM is that there is little or no eye movement during this stage.
Other characteristic features of this stage include:
What are the stages of NREM?
The NREM has 4 stages:
Stage 1: A wake-to-sleep transition period where the person falling asleep can be easily woken up by softly calling their name.
Stage 2: A characteristic of this stage is specific bursts of electrical activity called sleep spindles. This helps in the transfer of information from short-term to long-term memory. A more intense stimulus can wake the person in this stage.?
Stage 3: Progressing further, slow-wave activity marks stage 3, a period of deep sleep. The body begins its restorative process and sleeps slowly transitions into stage 4
Stage 4: Called ‘the deepest stage’, the body’s reset process occurs now in full swing: cells rebuild, protein synthesis occurs in high frequency, the immune system is reset
Sleep then slowly ascends to the lighter stages of NREM (stages 1 and 2) and then to REM.
What is REM?
REM is the phase of sleep characterized by rapid eye movements.
Other characteristics of REM:
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During REM, the information learned during the day is typically bounced around information boxes to relate this new piece to the existing ones.
This is often cited as a possible reason for dreaming.
Quick Fact:?REM is a phase of sleep that is unique to birds and mammals.
Sleep Genetics
About 90% of markers regulating sleep homeostasis are inherited
Several genes are involved in sleep regulation in humans.
Some of the candidate genes are?CLOCK, PER2, PER3, DEC2,?and?GRIA3.?
CLOCK?gene
CLOCK?gene is short for clock circadian regulator.
Quick Fact:?One of the first genes identified to be associated with sleep is the CLOCK gene.
Variations in this gene cause behavioral sleep changes.
Interesting variations:
A to G variation- influences the way?CLOCK?activates other genes (ARNTL, PER2, PER3)?in the circadian regulatory complex and delays the onset of sleep.
This determines the?chronotype?of an individual.
CLOCK?gene variations have also been shown to influence the habitual duration - to be either a long sleeper (>8.5 hours) or a short sleeper (<7 hours).
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Takeaway
Of the 24 hours, humans have a recycling rate of 16 hours. That means, after every 16 hours, we need an indispensable 8 hours of shut-eye.
If you have been experiencing difficulty in sleep you could consider digging up the information in your genes and making the appropriate lifestyle changes.