Quality sleep is essential for our physical and mental health. It is one of the most important aspects of our overall well-being. Unfortunately, many of us find it difficult to get enough sleep, leading to fatigue and impaired concentration. As many of us live busy lives with long days and late nights, sleep is often the first thing to be given up. While many of us think we can 'catch up' on sleep, research shows that chronic sleep deprivation can have a significant negative impact on both our mental and physical health. In this article, we will look at what quality sleep is and how to achieve it. We will look at the scientific basis of sleep, the importance of a healthy sleep regime and lifestyle, as well as various methods and strategies. 

 

The importance of healthy sleep

Sleep is essential for personal health. It can affect your mood, memory and ability to learn and retain information. Although we don't understand everything about sleep, we do know that sleep is regulated by two main hormones: melatonin (a hormone produced by the pineal gland, mainly during night-time sleep) and cortisol (a glucocorticoid synthesised by the cells of the fibrous area of the adrenal cortex from cholesterol). 

Melatonin is a hormone that controls your sleep-wake cycles. It is naturally produced in the brain when it is time to fall asleep. Melatonin levels are also affected by light - during the day, light helps regulate melatonin levels and keeps them low, so you can fall asleep more easily at night. The adrenal glands produce more cortisol when you are awake. It's important because it helps you cope with stress. At the end of the day, cortisol levels need to fall to release melatonin and help you fall asleep. Read more about the melatonin hormone here.

A healthy sleeping pattern is important for your overall health because sleep affects your metabolism (for more information on what human metabolism is, click here), body temperature, heart rate and digestion. When you sleep, your body releases certain hormones and chemicals that are essential for maintaining a healthy immune system (the system of organs and tissues in humans and other animals that protects the body from harmful micro-organisms, foreign proteins and other genetically "foreign" substances. Find out how to strengthen it and keep it healthy here.), blood pressure and metabolism (the activity of the body's cells that converts nutrients into energy). Many people find that regular sleep helps them to relax and fall asleep. A healthy sleeping pattern can also help manage any health problems and stress.

 

What is sleep quality?

Sleep quality is a person's satisfaction with sleep efficiency, sleep latency, sleep duration and wakefulness. Sleep quality is also strongly influenced by environmental factors such as age, circadian rhythm (an internal process that regulates the sleep-wake cycle and repeats approximately every 24 hours), body mass index (the ratio of a person's weight to the square of his or her height, used in medicine and in nutrition as an indicator of whether or not a person's weight is normal, read more about what the body mass index is here), stress, anxiety, depression, the temperature of the room, and extraneous distractions. If our sleep quality is good, we feel rested and it is easy to build positive relationships with our environment. Poor sleep quality results in fatigue, irritability, slowed reaction.

Disturbed sleep can affect your emotional and physical health. Sleep deprivation affects memory, concentration, mood and increases the risk of depression, obesity, type 2 diabetes, heart disease and high blood pressure. 

 

Sleep phases and stages

There are two types of sleep: NREM and REM. We go through five stages during the night. These stages follow each other, and each new stage is a continuation of the previous stage. The first two stages of sleep are NREM sleep and the last three stages are REM sleep.

 

- NREM sleep is the phase of sleep during which our body rests and recovers. Our muscles relax, our heart rate and blood pressure drop. REM sleep is further divided into 1-4 stages, and each stage has a different purpose. Stage 1 sleep is the transitional phase between wakefulness and sleep. In this stage, body temperature drops, heart rate slows down, blood pressure drops even further and breathing slows down. In Stage 2, your muscles relax even more and your body temperature drops further. Stage 3 is the deepest phase of sleep, during which we are most likely to dream. During stage 4, our body prepares for waking.

 

- REM sleep is the phase during which we are most likely to dream. During this phase, there is an increase in activity in the brain. The brain also releases higher levels of norepinephrine, serotonin and dopamine - three chemicals associated with feelings of happiness. REM sleep is important for healthy brain function and is a key indicator of how well you sleep.

 

How do the phases of sleep interact?

Sleep is cyclical, with each sleep phase following the previous one. As you progress through the phases, you will move from lighter sleep to deeper sleep and back to lighter sleep again. This cycle repeats itself several times a night, and the total time spent in each phase varies from night to night and from person to person. During the first few hours of sleep, you will spend more time in stage 3 NREM sleep and less time in REM sleep. As the night progresses, the time spent in NREM sleep stage 3 decreases and the time spent in REM sleep stage increases. This change in sleep stages is very important for a good night's sleep because it is during this part of the sleep cycle that your body renews itself and detoxifies.

 

Tips for a better night's sleep

- Alcohol should be avoided before going to bed. Warm milk, chamomile tea or cherry juice are recommended. Although there is not much scientific evidence that any of these night-time drinks significantly improve sleep, it is thought that warm milk is associated with chemicals that mimic the effects of tryptophan (one of the amino acids found in proteins) on the brain. This is the chemical from which the substance serotonin (a biologically active substance, hormone and neurotransmitter, a monoamine neurotransmitter synthesised in the brain from tryptophan) is produced. Chamomile tea may also be useful. It is thought to contain flavonoids (heterocyclic yellow organic compounds) which may interact with benzodiazepine receptors in the brain, also involved in the transition from sleep to wakefulness. In addition, chamomile tea, unlike green tea, does not contain caffeine. Finally, cherry juice can support the production of the hormone melatonin and maintain a healthy sleep cycle. 

 

- Physical activity. If you have trouble sleeping, try to avoid exercising within two hours of bedtime. 

 

- Melatonin supplements. Melatonin is a hormone that is naturally released in the brain four hours before you feel sleepy. It is triggered by the body's response to the reduced amount of light that should naturally occur at night. But nowadays, when it's dark outside, there are still plenty of lights in the environment - whether it's a phone, a laptop or a TV. This exposure to unnatural light prevents the release of melatonin, which can make it difficult to fall asleep. Fortunately, melatonin is available in tablets, capsules or other forms from pharmacies and Raw Powders. You will find especially high quality melatonin in the range: Melatonin spray, melatonin tablets and melatonin powder. If you decide to take melatonin supplements, you can read about the dosage, benefits and side effects of these supplements. 

 

- Stimulating the natural release of melatonin. The first step to getting natural melatonin is to understand how it is produced in the body. Melatonin is a hormone produced in the pineal gland, which is located in the brain. When the sun goes down, your body starts producing less melatonin. (Read more about the pineal gland here). In other words, melatonin is a hormone that your body naturally produces when it is dark outside. 

 

Getting a good night's sleep is essential if you want to feel invigorated and energetic the next day. Consistency and routine are also important for getting a good night's sleep. Understanding the different phases of sleep and how they interact with each other will help you get the quality sleep you need to feel your best.