The importance of sleep for physical, mental and emotional balance.

Let's agree on one thing. Sleeping is not a waste of time and certainly not a luxury. Sleep is an essential part of our health, just as important as eating well and moving around on a daily basis.

Even so, many people live with sleepless nights. If you wake up tired, feel like you haven't rested or spend the day fighting sleep, you're not alone. What we don't always realize is that while we sleep, the body goes into a real maintenance mode, working hard to keep us healthy.

What happens in the body while we sleep?

Despite the feeling of “shutting down”, sleep is an active process and fundamental to physical and mental health, as it performs biological functions that are essential for the maintenance, repair and development of the body.

A real brain cleanse.

During the day, the brain accumulates metabolic waste. It is during sleep that metabolic waste is removed, as well as neurotoxic molecules such as beta-amyloid peptide, which is associated with the risk of developing Alzheimer's disease.
Studies indicate that sleep disturbances and deprivation in the elderly are associated with the risk of developing dementia, and one of the possible causal factors is impaired elimination of non-functional proteins.

Protection for the heart.

Sleeping well is also a way of taking care of the cardiovascular system. Studies indicate a relationship between inadequate sleep and cardiovascular outcomes, such as arterial hypertension (AH), endothelial dysfunction and cardiac arrhythmias. Given this, it is not surprising that inadequate sleep is related to a higher risk of coronary artery disease (CAD), stroke and myocardial infarction (MI). Epidemiological data suggests that both short sleep (less than 6 hours) and prolonged sleep (more than 9 hours) are associated with a higher risk of cardiovascular death and all-cause mortality.

More balanced emotions.

A bad night's sleep goes far beyond a bad mood. Lack of sleep interferes with emotional regulation and increases the activity of the amygdala, the area of the brain that integrates emotions and interprets fear. For this reason, studies have shown that sleep deprivation is associated with a greater risk of anxiety, depression, impulsivity and difficulty concentrating.

Sleep chemistry and the body's balance.

Not getting enough sleep directly affects hormonal balance, which explains why the body reacts so quickly when it doesn't get enough rest.

Appetite control.

Sleep influences the hormones linked to hunger and satiety. Poor sleep reduces levels of leptin (which signals satiety) and increases those of ghrelin (which stimulates appetite). The result is more hunger, especially for caloric foods, as well as a greater risk of weight gain and type 2 diabetes mellitus (DM2).

Growth and repair of the body.
Growth hormone (GH) is released at its peak during sleep. In adults, it is essential for muscle recovery, bone mass maintenance and tissue renewal.
Body defense
Sleep deprivation can increase stress and encourage the release of cortisol, which reduces the body's defenses, such as decreasing the activity of natural killer (NK) cells and the production of antibodies, which are important in protecting against infections.
Not getting enough sleep directly affects hormonal balance, which explains why the body reacts so quickly when it doesn't get enough rest.

Appetite control.

Sleep influences the hormones linked to hunger and satiety. Poor sleep reduces levels of leptin (which signals satiety) and increases those of ghrelin (which stimulates appetite). The result is more hunger, especially for caloric foods, as well as a greater risk of weight gain and type 2 diabetes mellitus (DM2).

Growth and repair of the body.

Growth hormone (GH) is released at its peak during sleep. In adults, it is essential for muscle recovery, bone mass maintenance and tissue renewal.

Body defense.

Sleep deprivation can increase stress and encourage the release of cortisol, which reduces the body's defenses, such as decreasing the activity of natural killer (NK) cells and the production of antibodies, which are important in protecting against infections.

When does sleep need attention?

There are various sleep disorders and the body often gives clear signals that something is wrong. Be alert if you notice them:

• loud snoring or pauses in breathing while sleeping, which may suggest obstructive sleep apnea;
• difficulty falling asleep or staying asleep, with frequent awakenings;
• excessive sleepiness during the day and a greater likelihood of being exposed to accidents;
• changes in mood and memory, such as constant irritability and difficulty concentrating;
• bruxism (teeth grinding) and/or waking pain, especially in the head or jaw; 
• discomfort in the legs when lying down, with a constant need to move them.

These signs should not be ignored or normalized.

Want to know more about the relationship between health and sleep? Read the article “Insomnia has to do with the heart?”

Prioritizing sleep is taking care of your health.

Sleep is regulated by our biological clock and by the need for rest accumulated throughout the day. Respecting these processes makes all the difference to our physical, mental and emotional health.
Biolab invites you to make sleep quality a priority. Small changes can already help a lot, such as:

• keep regular bedtimes and wake-up times;
• avoid screens before bed;
• make the room dark, quiet and comfortable;
• create an evening relaxation ritual.

And if symptoms persist, see a specialist doctor. Sleeping well is not a detail, it's a fundamental part of living a healthier and better quality of life.

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