Morning all,

It’s time for another Friday #TrainingTips post and today it’s about heart rate variability.

What is heart rate variability you ask?  Basically heart rate variability or HRV as it’s also known is the the measurement of your heart rate.  But rather than giving you an average heart rate (HR) in beats per minute that we are all accustomed too, HRV looks much closer at the small fluctuations that occur between successive heart beats also called inter-beat intervals (R-R intervals and N-N intervals).

Why do I need to know this?

Well by measuring the inter-beat intervals of your heart rate you can start to understand insights into how your body is responding to the stress and recovery activities you’re placing upon it.   

How on earth does that work? 

Your HRV is directly linked to your Autonomic Nervous System (ANS), which with the endocrine system controls your body’s unconscious processes with the aim to maintain homeostasis (balance).  Your ANS is made up of two separate systems that work together to maintain this balance and know doubt you will have heard of them: Sympathetic Nervous System (SNS) and the Parasympathetic Nervous System (PNS).

Your Sympathetic Nervous System or your Fight or Flight system controls your reactions and responses to external and internal stressors.  For this fact your SNS is only in an ideal world activated for short periods of time to overcome stressful situations.  The reason why we don’t want to have the SNS firing all the time is that it’s there to save us in emergency situations and during times of SNS activation the body can and will ignore any potential long term health risks if it means potential short term survival.  Just think about that for a moment, if for whatever reason we could be actively without knowing it be causing ourselves permanent damage all because we are keeping ourselves in this SNS.

Now your Parasympathetic Nervous System or Rest and Digest system funnily enough is the complete opposite to the SNS.  It’s primary role is to help build and repair for the long game that is life.

But our nervous systems will be switching between SNS and PNS all the time (a simple example of this is that the SNS increases the heart rate and the PNS slows it down) so our nervous systems are always working together to maintain that balance.  Having a nervous system that can swap and change strongly between both the PNS and SNS is a sign of a healthy nervous system.


Image Source:

So now you understand what HRV is, but how can this help me?

Knowledge is power in my book.  By taking daily HRV readings you can begin to understand how your nervous system, cardiovascular system and your respiratory system responds to your daily activities and stressors.  And with this understanding and insight you can optimise your training, maximise your performance, manage stress more effectively and ultimately improve your overall health and wellbeing.

I’ve been doing this for the last couple of months, taking daily HRV readings and monitoring how my body reacts to the stressors I place on it.  I can now train and respond better on a daily basis according to my HRV, train hard when my body is ready and can cope with the stress and take the time to rest and recover when my body needs it most.


It’s been very interesting and I’m not going to stop testing and monitoring, if you would like to know more and how you too could learn from your HRV please get in touch.


Have a great weekend guys.


Stay strong and live, love and laugh!






This website offers health, fitness and nutrition information designed for educational purposes only.  You should not rely on this information as a substitute for, nor does it replace professional medical advice, diagnosis or treatment.  The owner will not be liable for any errors or omissions in this information nor for the availability of this information. The owner will not be liable for any losses, injuries, or damages from the display or use of this information.  Any images displayed have been done so identifying the source from where it was found.  Prior to use all images will have undergone detailed search to source the ownership of said image/s so to credit their work.  Any breaches of copyright or licence agreements will have been done so outside of the website owners knowledge and is happy the credit the original owners work or remove any image/s that do not wish to be displayed.

Leave A Response

* Denotes Required Field