Core Sleep vs Total Sleep: What is the Difference?

Written by: Angeline T.

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Time to read 8 min

Have you ever noticed the difference between a short nap that refreshes you and a whole night's sleep that still makes you groggy? It all has to do with core sleep and total sleep. Core sleep is the central portion of your sleep cycle, including the most restorative phases, often marked by rapid eye movement (REM) sleep. Total sleep is the total time spent sleeping. This understanding can aid in tackling sleep problems and enhancing your health and, ultimately, your daily self-feelings. So whether it is chronic sleep restriction or monitoring your sleep using applications such as Apple Watch, the ability to understand makes all the difference.

Understanding Sleep Patterns

Sleep forms a vital part of our day-to-day activities, yet most of us pay no attention to it until the middle of the night finds us lying awake. If we are to improve how we sleep and, thus, our overall health, we must understand the different types and phases of sleep. So, let's begin with two of the most fundamental types: core sleep and total sleep.

Sleep patterns: core sleep

Core Sleep: What is it?

Core sleep is the fundamental part of our cycle of sleeping. Composing mainly of deep stages: Slow Wave Sleep (SWS) and Rapid Eye Movement (REM), in which our bodies and brain get some critical tasks, it's a point where body temperature drops from its core and a pretty good opportunity for restoration or renewal that strengthens the immunity system and consolidates those memories. It means that though you are unaware of it, your body is busy preparing you for the day's challenges.


Slow Wave Sleep (SWS): This stage is crucial for physical recovery and growth. It helps heal muscles and tissues and rebuild energy for the day.


REM Sleep: Your brain activities are high, and dreaming is prominent. REM sleep is crucial for regulating emotions and cognitive function, which helps reduce stress levels and retain information and memory better.


Your body will always try to find time for core sleep even after total deprivation. It, therefore, indicates its importance in maintaining mental and physical health.

Total Sleep: What is it?

Total sleep is the total period you sleep, including when you fall asleep and when you wake up feeling fresh. As such, total sleep comprises core sleep plus other light stages of sleep. While core sleep is crucial, these other lighter stages of sleep are equally vital in ensuring your general well-being and recovery.


Benefits of total sleep include:


Recharges Energy: A complete sleeping cycle is crucial in getting an entire renewal cycle so that you wake refreshed and rejuvenated.


Mood Stabilization: Adequate sleep prevents a roller-coaster of emotions. It thus improves emotional functionality and may be necessary for controlling major depression more effectively.


Physical Housekeeping: While asleep, your body regulates central temperature systems and exercises to regulate power distribution.


Monitoring total sleep will enable you to understand your trends. With gadgets like an Apple Watch or a sleep-tracking app, you can progressively improve your rest. By recognizing how vital total sleep is to you, you will likely not experience chronic sleep restriction and disturbances.

Comparing Core Sleep and Total Sleep

Core sleep and total sleep are subsets of your nocturnal sleep. But each of them differs in function. Knowing the difference could thus help you make healthy decisions.

Differences in Health Impact of Core Sleep and Total Sleep

Core sleep and total sleep both affect your health, though in different ways. Core sleep focuses on specific restorative functions of growth and immune function. When core sleep is interfered with, you face tremendous health problems, like impaired cognitive activity and increased vulnerability to chronic disease.


When total sleep is neglected, it can cause health interruptions in the form of:


Increased Stress: Increased stress hormones may affect heart health and related matters.

Mental Stress:  Reduced total sleep tends to promote anxiety and depression.

Metabolic Issues:  Inconsistent rest can cause metabolic disorders, leading to weight gain.

Waking up with Core Sleep

Variations in Restorative Value Between Core and Total Sleep

Finding meaning in core sleep is essential when considering the value of restorative activity. Core sleep ensures the fundamental restoration needed to perform functions effectively during the day. The significant phases involved in core sleep include REM and slow-wave sleep, which restore both mind and body.


Therefore, total sleep relates to overall wellness by avoiding any interference with core sleep processes. It is like driving: when one fuels the vehicle (core sleep), one follows up with regular checkups (total sleep).

Implications of Core Sleep and Total Sleep for Daily Functioning

The quality and quality of your sleep shows how well you will function during the day. Let's compare here:


Core Sleep 

- Memory consolidation and learning 

- Better problem-solving and creativity 

- Emotional stability and strength


Total Sleep 

- Keeps energy levels even throughout the day 

- Helps have healthy ways to cope with stressful events. 

- Keeps the natural rhythm and consistency of the sleeping and waking states in the body.


In a nutshell, proper harmony between core sleep and total sleep significantly enhances the quality of life. Whether one will set up the environment where sleeping takes place, watch how the sleep condition is developing via an electronic gadget, test various sleep cycles, or use mattresses such as 
Mino Zero and Mino Hybrid - this should be obvious, so emphasizing both elements in it gives the maximum impact of them. Knowing each critical type's role, one might adequately address sleep-related issues or improve the quality of daily life with help from sweet dreams.

Optimal Sleep Architecture

Sleep is not just a time block but a highly complex cycle of several stages, each with its significance. The cycle consists of three major phases: light sleep, deep sleep, and REM (Rapid Eye Movement) sleep. An ideal balance between these three could explain why core sleep and total sleep are necessary for general health.

Sleep Architecture

We experience different sleep cycles every night, and each phase has its specific purpose. Here is what it approximately looks like to break it down:


Light Sleep:  In this sleep, you make up almost half of the cycle, about 50 to 60%. This can be your gentle pathway into the deep restoration stages.


Deep Sleep: Deep sleep constitutes approximately 15-25% of the cycle. This sleep rejuvenates physical strength, muscle growth and repair, hormone regulation, and other functions. It is the main repair work in sleep and is of a heavy-lifting quality.


REM Sleep: This constitutes approximately 20-25%. At this stage, there is high brain activity, some highly intense dreams, and memory consolidation. The REM system is a central filing system in the brain that stores and sorts these memories for long-term maintenance.


An ideal night's sleep would run through these stages several times, ensuring that the body and mind get their due refreshment. However, this balance is only foreordained for some, and it can be thrown off by various factors that lead to insufficient restoration.

Splitting Sleep: Day vs Night Schedules

The modern world thrives on flexibility, and with it comes the idea of siestas, power naps, and polyphasic sleep schedules. While splitting sleep might fit into busy timetables, it impacts sleep architecture.


Daytime Sleep:  Often consists of naps. While short bursts of light sleep can relieve immediate drowsiness, they usually don't reach the deep or REM stages that occur at night.


Nighttime Sleep: It generally allows the body to pass through natural sleep cycles, tapping into the deep and REM stages that are good for you.


Sleeping on a traditional schedule at night ensures that we spend the critical stages uninterrupted, whereas splitting sleep could fragment the REM cycle or keep deep sleep underdeveloped.

Potential Consequences of Sleep Cycle Disruption

Sleep cycle disruption can result in the inability to feel rested but has far more severe implications for body and mind. Prolonged deprivation or disturbed sleep may cause a loss of sleep that can hardly be compensated by some extra snoozing over the weekend.


Impaired Cognitive Function: REM sleep is highly destructive to memory, learning, and control of emotions.


Diseases: Poor sleep in a fragmented manner over a period has been linked with the disease of cardiovascular disorders, low immunity, and metabolic disorders like obesity.


Mood Disorders: Depression and anxiety are directly associated with sleep disorders, and failing to achieve quality sleep is an exacerbation of those disorders.

Technology and Sleep Tracking

These are some of the uses of wearable devices or applications tracking sleep patterns, which couldn't get any easier for you and is now provided in complete detail on your Apple Watch. It can provide information that can reveal every detail of your sleeping hours—from body movements to heart rate through REM stages. Given how vital sleep is in health and wellness concerns, the importance of such knowledge concerning technology in its use in keeping track of this needs to be realized.

Sleep tracking apps

Interpreting Sleep Data from Sleep Devices

Of course, the heart of any device or app is understanding its data. Many applications detail how you have slept into REM, light, and deep stages.


Some common data points may include this:


Total Sleep Time: The number of sleeping hours, ideally covering 7 to 9 hours, preventing total sleep deprivation.


Sleep Stages: There are three different stages of sleep: light sleep, deep sleep, and REM sleep, which are necessary for multiple functions and purposes.


Sleep Quality Score: Some apps will give you a simple score, factoring in how often you wake up, your movements at night, and how much REM sleep you get—a quick way to gauge whether you're well-rested.


You can get a clearer picture of your nightly slumber using these pointers. Remember, while technology can guide us, true sleep wisdom often comes from listening to your body's cues.

Conclusion

Understanding the balance between core sleep and total sleep can be a game-changer for your overall well-being. While core sleep ensures you achieve the essential stages, including REM sleep, which is crucial for restorative processes, total sleep addresses your body's comprehensive need for rest.


Core Sleep focuses on optimizing the most restorative phases of sleep. Total Sleep includes all sleep stages vital to good mental and physiological health.


Keeping track of sleep patterns through an Apple Watch, a sleep-tracking app, or any other device can even detect totally or partially disturbed sleep disturbances. All these disturbances can help alleviate significant symptoms of depression, including its core symptoms. Let's focus on making time for sleep health to wake refreshed and ready to take over the day.