How to Assess Your Body’s Readiness in the Morning Using HRV

Imagine this: you wake up in the morning and suddenly feel more sluggish than usual. Your morning routine, which normally feels effortless, suddenly becomes heavy, and the energy you have seems to vanish. This situation can make us wonder, Is it just a bad mood, or is our body actually not in optimal condition?

In today’s world, we are fortunate that technology can help us understand our body’s condition more accurately. One health metric that can provide insight into your body’s readiness in the morning is Heart Rate Variability (HRV).

HRV, or Heart Rate Variability, refers to the variation in time between each heartbeat. When a nurse measures our heart rate, the result is usually given as a single number, for example 60 beats per minute. However, this number does not mean that the heart beats exactly once every second. The interval between beats might be 0.8 seconds or 1.2 seconds, and it is this variation that can serve as an indicator of our energy readiness in the morning. If your HRV is low (less variable), it may be a sign that your body used a lot of energy overnight, which could explain why you feel more tired in the morning. HRV is typically measured using health trackers. The data collected from these devices can show your HRV upon waking, providing an overview of what happened in your body during sleep.

Our body is regulated by two autonomic nervous systems: the sympathetic nervous system, which prepares the body to respond to stress (the fight-or-flight response), and the parasympathetic nervous system, which helps the body relax and calm down. The balance between these two systems is crucial for optimal bodily function. When they are well balanced, HRV tends to have a wider or more varied range. Conversely, if one system becomes dominant, HRV will be lower or more monotonous.

However, this can be improved by practicing good sleep hygiene, such as going to bed at the same time every night, reducing exposure to blue light from electronic devices before sleep, and creating a calm and comfortable sleep environment.

 By doing so, the balance between the sympathetic and parasympathetic nervous systems can be maintained, your HRV can increase (become more variable), and your energy can fully recover so you can face the day with renewed enthusiasm.