To understand how the body is affected by workload, recovery and the rhythm of the working day, HRV can be a more interesting signal.
HRV stands for Heart Rate Variability and refers to the variation in time between heartbeats. Two people can have the same heart rate but completely different HRV. That's because the heart doesn't beat like a metronome. The time between beats varies constantly, and that variation is influenced by, among other things, the nervous system, recovery, stress, sleep, physical strain and how you feel that day.
Put simply:
– Heart rate shows how fast the heart beats.
– HRV shows how flexibly the body regulates itself between beats.
In general, a higher HRV can be a sign that the body has good recovery and flexibility. A lower HRV can be a sign that the body is under more strain or finds it harder to wind down.
But HRV shouldn't be interpreted as an absolute truth in the moment. What matters is the development over time, in relation to the individual's own baseline and to what is actually happening in everyday life.
Why HRV is interesting in working life
In working life we often talk about stress, workload and recovery based on how people themselves experience their situation. That's important. But experience doesn't always capture the whole picture. Sometimes we notice stress late. Sometimes we get used to a high pace. Sometimes we keep functioning on the outside even though the body is showing something else.
This is where HRV can contribute an earlier signal. Not as an answer key. Not as surveillance. But as a way to better understand how work affects the body over time.
When HRV is combined with reflection, dialogue and context, it can help both individuals and organisations see patterns that are otherwise easily missed:
– When workload builds up
– When recovery actually happens
– How different parts of the working day affect energy
– Whether the body gets the chance to switch between tension and recovery
It's that combination that matters. The body's signals only become truly valuable when they are put in relation to the person's own experience and the actual conditions of the work.
Micro-recovery – small breaks that can make a difference
Recovery doesn't always have to be something big. It doesn't only happen on holiday, after the working day or during a perfectly planned lunchtime walk.
Often it's also about the small gaps in between.
Standing up.
Breathing calmly for a moment.
Walking for a few minutes.
Changing environment between two meetings.
Getting a short break before the next cognitive switch.
Moments like these can help the body regulate itself. For some, it can also show up in HRV over time. That doesn't mean every micro-break immediately “raises HRV” in a simple, mechanical way. The body is more complex than that. But regular recovery in everyday life can affect the body's ability to handle strain.
And for many organisations, this is exactly where an important insight lies: sustainable performance isn't just about the big efforts, but about how the working day is actually built.
From late signals to better understanding
Traditionally, organisations often discover problems too late. When sick leave increases. When engagement drops. When the loss of performance is already noticeable. When people themselves say it has gone too far.
HRV and other body-based signals can help make the picture earlier and more nuanced. But the value doesn't lie in collecting more data for its own sake. The value lies in creating better understanding:
– How does work affect people's capacity?
– Where is workload building up?
– Where is there recovery?
– What does the individual, the team or the leader need to pay attention to earlier?
This is where Zmartrest's perspective comes in. We don't believe the leadership of the future is about more control. It's about a better basis for decisions, better conversations and earlier decisions.
In short
Heart rate shows how fast the heart beats. HRV can give a picture of how the body regulates itself during strain and recovery. But it is only when the body's signals are understood together with the person's own experience and the context of the work that they become truly useful.
Not to measure people harder. But to understand them better.
Tony Grefweberg
Customer Success Manager, Zmartrest