COVID 19 related stress, anxiety, fears


The outbreak of diseases, such as the coronavirus disease 2019 – COVID 19, may be stressful for all of us. Fear and anxiety about a COVID 19 disease and quarantine stress can be overwhelming and cause strong emotions in adults and children.

Stress is a natural response that can be both useful and harmful. A good amount of stress can propel us to achieve a task. However, continued high levels of stress can be harmful to the body.

Coping with stress, anxiety and fears is crucial during COVID 19 and quarantine isolation.

Neeuro + Biofeedback and Neurofeedback Therapy FREE Stress Relief Kit

Too much stress can lead to multiple negative outcomes, including:

1. Weakened immune system
2. High blood pressure and cholesterol
3. Unnecessary weight gain

This can lead to a weakened immune system, high blood pressure and cholesterol, and even gaining weight.

COVID19 stress

Stress Management can make you, your loved ones, and your community stronger.

Using the latest patented technologies from Singapore, we can now help you manage stress using an app designed by Neuroscientists.

That’s why Neeuro has partnered with Biofeedback and Neurofeedback Therapy to help you and your loved ones enjoy your stay at home!

LISTEN WITH BOTH HEADPHONES. This is music infused with frequencies that can help you RELAX during these stressful times.

Listen to it only with headphones! It will be the first time that you will listen to a song with your brain and not only with your ears.

WHO recommends listening to music to relax and maintain your mental health.

You can find out more about this music here.

Download the Galini App FREE and enjoy it for 14 days.

Neeuro + Biofeedback and Neurofeedback Therapy Join Forces to Help Combat Stress

Galini Helps You Manage Stress,
Anytime, Anywhere

Galini is an app that can measurably manage stress, carefully tailored to provide you optimal Relaxation and Mindfulness.

How Galini Stress Relief Kit
Helps You Relax

The special audio frequencies (binaural beats) in the tracks, coupled with calming visualisations of peaceful scenes, can coax your mind into a state of deep relaxation.

Breathing techniques are designed to stimulate specific parts of the brain to modulate the mind and body and bring about a deep sense of peace to your whole person.

You will be guided through slow and deliberate movements while the screen interacts with you. This helps to regulate your focus and induce an increased awareness of your internal sensations and of the immediate environment.

COVID 19 and Mental Health


A recent review of research, published in The Lancet, found that COVID 19 quarantine is linked with post-traumatic stress disorder (PTSD) symptoms, confusion, and anger, with some research suggesting these effects are long-lasting. Given that the coronavirus crisis is likely to be with us for some time, the mental health implications can’t be dismissed.

Don’t know what else you can do WITH your KIDS during COVID 19 quarantine? Instead of just watching TV, Youtube, playing some random games, here’s a useful SOLUTION for you!

Train your brains using the latest app to keep yourselves SHARP so that you and your kids can be mentally healthy together!

At any stage of life, our brains have the ability to adapt and change. This ability is known as “neuroplasticity”. With the right practice, the brain can become stronger, just like a muscle.

For children, the benefits are:

  • Paying better attention in class;
  • Remembering instructions and formulas;
  • Reducing careless mistakes

For adults, some of the benefits are:

  • Sharper mind;
  • Reducing forgetfulness;
  • Finishing multiple tasks faster

You can best use this period to your advantage.

Using the latest patented technologies from Singapore, you can now train by playing specially designed games by Neuroscientists that can help you enhance your brain power!

That’s why Neeuro has partnered with Biofeedback and Neurofeedback Therapy to help you and your loved ones enjoy your stay at home!

Memorie is an app that puts together games designed by neuroscientists to improve attention, memory and other cognitive skills.

Memorie offers a complete mental fitness training programme.

With brain stimulation games, you can challenge yourself and test your skills in attention, memory, multi-tasking, spatial and decision making.

How This FREE Memorie Brain Training Kit Can Train
Your 5 Cognitive Skills

Memorie’s attention training games encourage players to gain a higher attention span to process new concepts and complete daily tasks with more ease.

Memory is important for storing and retrieving information. Training lets us improve aspects such as working memory that helps in solving problems, etc.

By training logic and reasoning skills, we can make more mindful decisions by organising relevant information and outlining alternatives.

Spatial training is relevant for math (e.g. Understanding shapes and distances), using maps, and even for sports.

HRV in Sports Performance

Heart Rate Variability in Athletes

The analysis of heart rate variability in athletes performance has become established and recognized in the past 2 decades as a non-invasive method for evaluation of the body’s reaction to training loads, recovery methods and overtraining syndrome (OTS). HRV (Heart Rate Variability) training should be in every athlete’s vocabulary. HRV unlocks high-level information that can be used to optimize performance and training for athletes of any level.

As an athlete, you’re always looking for that 1% improvement in every aspect of your game. But as elite athletes get better and the margin for improvement narrows, actually achieving a 1% improvement becomes harder. With that in mind, athletes are conditioned to revert to the “train harder” mentality in order to grab that 1%. This mentality doesn’t always work because much too often overtraining and injuries occur as a result. If you want to make sure your body is peaking at the right moments, having insight into HRV becomes that coveted 1% all athletes are looking for.

Heart rate variability (HRV) represents variations between consecutive heartbeats (beat to beat or R-R interval) over time. This beat to beat variation in heart rhythm is considered normal and even desirable. The disappearance of variations between consecutive heartbeats is a result of autonomic dysfunction which can be associated with neurological, cardiovascular and psychiatric disease states. There is a large body of evidence reporting that higher variability of heart rhythm is associated with reduced mortality, improved quality of life and better physical fitness. (Learn more about Heart Rate Variability here).

The physiological background of HRV is complex and affected by circulating hormones, baroreceptors, chemoreceptors and muscle afferents. An important factor that influences HRV is respiratory sinus arrhythmia – the natural variation in heart rate (HR) that occurs during breathing. During inspiration, HR increases whereas during expiration HR decreases. The autonomic nervous system (ANS) through sympathetic (SNS) and parasympathetic (PNS) pathways regulates the function of internal organs and the cardiovascular system. Sympathetic activity (“fight or flight”) increases an athlete’s cardiac contractility, heart rate, breathing, and muscle tension during training or competition. In contrast, parasympathetic (vagal) stimulation (“rest and digest”) reduces an athlete’s heart rate, relaxes muscles, and allows for digestion. Any source of stress (psychological, physical or illness) will provoke disturbance in the ANS and consequently in HRV. The long-term presence of an imbalance between sympathetic and parasympathetic tone can impair the performance of athletes. By providing a unique look into nervous system activity, HRV data allows athletes to strike the right balance between training and recovery.

Heart rate variability in athletes


During exercise, HRV is reduced (shorter R-R intervals) and heart rate is increased as a result of augmented SNS and attenuated PNS activity. Not only are the intervals between R-R peaks shorter, but they also become more uniform (reduced R-R variability).

The relationship between sympathetic and parasympathetic activity during exercise depends directly on training intensity. During physical activity, sympathetic nerves can increase cardiac output to 2 to 3 times the resting value.

Caution should be taken when interpreting HRV analysis during exercise. At high exercise intensities (>90% VO2 max) increased breathing frequency will cause an increase in vagal contribution (higher PNS activity) caused purely by the mechanical properties of the heart and not a neural contribution of the ANS. This means that actual SNS activity at higher exercise intensities will be masked by PNS activity as a result of a higher frequency of respiration. Therefore, during an incremental test to exhaustion, the athlete has to be instructed to maintain a stable respiration rate as much as possible.


Distribution of training loads is a fundamental component of periodization. The elements which comprise training load are training volume and intensity. The interplay between these two elements will define the total training load. Higher training loads will cause a greater degree of ANS disturbance and sympathovagal imbalance. Post-exercise HRV analysis appears to be a valuable indicator to evaluate variations in performance level and can indirectly reflect training loads. There is evidence that HRV parameters are highly correlated with intensity and volume of exercise and are inversely related to the level of training load.


On the assumption that physical activity causes stress (a stimulus), the body will respond with a stress reaction on different physiological levels. In addition to a stress reaction, adaptation processes occur during the recovery period. If the magnitude of the stress stimulus (training load) is high enough (overload principle) to evoke a reaction of the body, then the response will be proportional to the stress level and, as a result, greater training effects will be accomplished (adaptation).

In order to reach higher performance levels in sport, it is essential to understand that well-designed and integrated rest periods are of great importance. Recovery after training is considered an integral part of the training methodology. There is no improvement in performance if there is a lack of optimal recovery. Problems occur when the demands are so frequent that the body is not able to adapt. This means that the body will continuously be under sympathetic domination during rest as well as during activity.

Most athletes and sport science personnel understand the importance of recovery after exercise, which is defined as the return of body homeostasis after training to pre-training or near pre-training levels.

Recovery involves getting adequate rest in between training sessions/competition to allow the body to repair and strengthen itself in preparation for the subsequent bout. Optimal athletic performance is supported when recovery to pre-training or near pre-training levels is allowed. If recovery is insufficient, hindrance of physiological adaptation and reduced athletic performance should be expected. Recovery plays a major role in minimizing the negative effects of training (fatigue) while retaining the positive effect (improved fitness/strength/performance). If recovery is not monitored following exercise, fatigue may accumulate and become excessive prior to competition, resulting in reduced athletic performance and, potentially, overtraining syndrome. In its essence, the overtraining syndrome is characterized by a combination of excessive overload in training stress and inadequate recovery, leading to fatigue and decreased performance.

Heart rate variability in athletes performance: Train-Recover-Perform

Every training session can be considered as stress to the body, which in turn causes disturbance of homeostasis and ANS modulation. These changes in ANS activity are manifested by increased sympathetic or/and decreased parasympathetic activity of the ANS and are reflected by HRV parameters. One crucial aspect of recovery is sleep, during which parasympathetic activity should dominate; however, an optimal recovery state is generally characterized by the parasympathetic (vagal) predominance of ANS regardless of the time of the day.

There are a variety of parameters that can be used to measure post-exercise recovery (VO2 max, creatine kinase, C-reactive protein, plasma cortisol, blood leukocyte, myeloperoxidase protein level, and glutathione status). But these methods are mostly invasive, time-consuming and expensive for everyday use. Accordingly, the importance of a non-invasive, easy and affordable method to evaluate recovery is obvious. Thus, HRV technology is being increasingly used to evaluate the status and level of recovery.

Long-term high-intensity training sessions gradually decrease the parasympathetic component of HRV which increases during the rest period. The sympathetic component demonstrates the opposite tendency.

The reactivation of parasympathetic activity of HRV to pre-exercise levels as quickly as possible significantly improves the recovery process of athletes. The inability to return HRV parameters to pre-exercise or optimal levels in a reasonable time is considered a chronic disturbance in ANS activity, which can lead to overtraining.

Today, HRV-based devices and software assist in the recovery analysis of athletes, providing easily interpretable data to trainers and athletes. The most common procedure used to evaluate recovery level involves overnight measurement (nocturnal) of HRV, although systems that can assess a quick recovery index (5-minute measurement) are available as well.


Sometimes the line between optimal performance level and overtraining is very thin.

Overtraining syndrome (OTS) is the result of the long-term imbalance between stress (internal and/or external) and recovery periods. There is a large body of evidence implying that significant cardiac autonomic imbalance between the two ANS pathways (sympathetic and parasympathetic) occurs due to overtraining syndrome.

In the literature, there are conflicting results about ANS modulation in overtrained athletes, with some studies reporting a predominance of sympathetic and some of the parasympathetic autonomic tone during an overtrained period. These disputed results might be explained by the description of different types of overtraining.

Two types of OTS have been reported: sympathetic and parasympathetic overtraining, with each having specific physiological characteristics.

Sympathetic tone







Parasympathetic tone





Loss of motivation


Early stages of performance impairment are characterized by sympathetic domination of ANS at rest which is often referred to as an “overreaching state” or “short-term overtraining”, meaning that the disturbance of homeostasis was not high and/or long enough to provoke a chronic overtraining state and therefore the time needed for full recovery of all physiological systems typically encompasses a few days to several weeks.

The increased sympathetic tone is generally observed in sports where a higher intensity of exercise dominates. If the overreaching state (sympathetic autonomic tone domination) continues a longer period of time, OTS and domination over of parasympathetic autonomic tone will develop. Parasympathetic OTS dominates in sports which are characterized by high training volume.


Analysis of heart rate variability in athletes performance has become a widely accepted method for non-invasive evaluation of ANS modulation during and after exercise. In order to overcome the aforementioned disadvantages, the signal of the recording must contain a minimum of 5 minutes of HRV fluctuation in order to get reliable results.

In the last 5 years, the number of devices and software programs/apps using HRV technology has increased exponentially. The current trend in software engineering is to make all wireless sensors for capturing and transmitting of HRV data compatible with smartphones. Hardware and software engineers are continuously improving the accuracy of sensors that record and receive HRV signals (heart rate belts, wireless technologies, and protocols), as well as HRV analysis techniques (software, mathematical models). This provides the trainer and athlete quick and easy analysis of HRV data during and after a training workout (training load, recovery and overtraining).


HRV provides an excellent objective status of the autonomic nervous system. The primary goal is reducing injuries, decreasing overreaching, improving player health, increasing adaptation, and learning more about training. But the winning requires that talent is available and optimized in performance, not just uninjured. The essence of monitoring heart rate variability in athletes is to drive a routine and accountability process for winning. The data collected from HRV can guide athletes like a compass to a training program blueprint, but only if the commitment exists with everyone. Winning requires talent and preparation, and while only a few can be on top of the mountain, HRV can increase those odds if used properly.



  • RMSSD is the most commonly used and trusted metric. It is a clear marker of parasympathetic activity (recovery). RMSSD has been shown to be linked to performance changes, fatigue states, overreaching and overtraining. The return of RMSSD to baseline after exercise has been related to the clearance of plasma catecholamine, lactate, and other metabolic byproducts in addition to the restoration of fluid balance and body temperature. Therefore, RMSSD is considered a global marker of homeostasis that reflects various facets of recovery and may explain why planning intense training when HRV is at or above baseline may be useful for improving endurance performance.
  • Duration: 60 seconds to 2 minutes in the morning is the ideal measurement protocol in terms of reliability and practical applicability in team settings. Night measurements are also a valid method.
  • Frequency: at least three days per week are required to establish a valid baseline. More measurements can be beneficial, up to 5 ideally. If compliance is an issue, give priority to the three days in the middle of the week, far from matches to avoid residual fatigue.

Data analysis: baseline HRV and the coefficient of variation (CV) are the most important parameters to look at.

  • HRV baseline: computed as the average HRV over a week (or using 3-5 days if daily measurements are difficult to obtain). It should be analyzed with respect to an athlete’s normal values. Normal values are a statistical way to represent historical data collected in the previous 30 to 60 days, which should give us insights on where we expect HRV baseline to be, provided no significant stressors are present. In case of such significant stressors or issues in responding to training or lifestyle stressors, the baseline will deviate from the expected normal values.
  • CV: coefficient of variation, or the amount of day to day variability in HRV.


Pre-season: load can be adjusted based on individual responses as shown in baseline HRV and CV. In particular:

  • Athletes showing a reduced HRV and increased CV most likely are struggling with the load and might benefit from reduced load or other recovery strategies (sleep, diet, yoga or other ways to reduce non-training related stress for example).
  • Athletes showing a stable or increasing HRV are most likely coping well with the increased load.
  • Athletes showing a reduced CV are most likely coping well with the increased load unless their baseline HRV is reducing or going below normal. In this case, the reduced CV might highlight an inability to respond to training.

During the season: the same patterns can be used throughout the season to understand individual responses to changes in training load. HRV should be used as a continuous feedback loop more than as a value to optimize towards a certain value. Staff working with athletes and physiological measures should give priority to baseline and CV changes in order to determine individual responses and adaptations.


• HRV is an indication of your resilience – the ability of the nervous system to respond and recover from physical or psychological stressors;
• HRV values depend on the length of the measurement
– 5 minutes = short term HRV
– 24 hours = long term HRV;
• HRV is age and gender-dependent;
• HRV has a circadian rhythm;
• HRV may change day to day with your biorhythm or due to emotional or physical stress;
• HRV is depended on body position;
• Chronic low HRV is an indication of systemic health (psychological or physical) issues;

Circadian Rhythm of HRV
HRV and body position
  • HRV measurement should be provided for the same length of time each day (3 minutes typical);
  • HRV should be taken at the same time each day
    – First thing in the morning is recommended
  • HRV should be taken in the same position
    – Lying down
    – Sitting
    – Standing


Heart Rate Variability (HRV) refers to the variable time between individual heartbeats. HRV can be accurately measured by an ECG. A basic heart rate monitor can also be used to provide this data, but the HRV will not be as accurate.
In the past, only elite athletes and their coaches had access to HRV data because devices that measure ECG were extremely expensive and difficult to wear.

In the last 5 years, innovations in wireless technology have significantly increased the number of devices on the market which are using HRV indices to control and manage the training processes of athletes. Now, with accessible, wearable and user-friendly technology like eSense Pulse wearable ECG monitor, everyone from professional athletes to weekend warriors can use HRV data to enhance their training.


While using eSense Pulse, the eSense App displays the current heart rate and the target heart rate during recording, in the overview area. The target heart rate can be adjusted at any time in the settings of your eSense App. You can either set the target heart rate directly or set it as a percentage of the predicted maximum heart rate. By default, the target heart rate value is set as 85% of the predicted maximum HR.

The predicted maximum heart rate is calculated with the following formula: Predicted Maximum Heart Rate = (220 – your age in years). Normally you should maintain your heart rate below your target level (85% of a predicted maximum heart rate, based on your age, and your medical conditions).

HRV focuses on the distance between peaks. In the eSense App, the SDNN (Standard deviation of all NN intervals) and RMSDD (Root Mean Square of the Successive Differences) is one of a few time-domain tools used to assess heart rate variability, the successive differences being neighboring RR intervals) values both relate to the time-interval between peaks, but RMSDD best shows parasympathetic or “rest and digest” activity. Accurate RMSDD measurements can also be taken in 60 seconds or less, which makes RMSDD quick and easy.


As a training tool, the power of HRV comes from establishing an RMSDD baseline. To establish a baseline, an athlete simply needs to wake up, strap on the eSense Pulse for a minute, and take a reading each day for one week. At the end of the week, if they average all of their RMSDD measurements, they will have a baseline RMSDD number.

In the future, if their RMSDD numbers fall below their baseline in the morning, they will know to ease off on training for optimal performance. If their RMSDD number goes above their baseline, they are more than recovered and can take on a challenging workout. In other words, higher RMSDD numbers correspond with more parasympathetic activity or a more recovered state.


In a perfect world, an athlete’s mind and body would be in total sync, and athletes would intuitively know how hard to push themselves. In reality, athletes may start to gradually stop making progress without knowing exactly why. They are either over or undertraining. They may attribute their fatigue to not working hard enough when, in fact, they are working too hard. HRV measurements like RMSDD give athletes an objective way to justify a rest day, or on the other end of the spectrum, prompt them to increase the intensity and volume of the training. Heart rate variability in athletes used to be available to only world-class athletes, but with technologies like eSense Pulse, HRV analysis can be used by cyclists, runners, endurance athletes of all kinds, and even gym enthusiasts.


Bojan Makivic, Pascal Bauer – Heart Rate Variability Analysis in Sport, Utility, Practical Implementation, and Future Perspectives. Aspetar Sports Medicine Journal, p.326-331 –

Simon Wegerif. – Using Heart Rate Variability to Schedule the Intensity of Your Training. –

Cian Carroll. – Monitoring An Athlete’s Internal Response: A Comprehensive Guide To Analysing Heart Rate Variability & Heart Rate Recovery. –