It beats relentlessly, second by second, from our first breath. The heart embodies vital constancy, but also an enigma that science is still exploring. Because if it is the symbol of endurance, can it also be optimized like an economical muscle? This is precisely what a new study on resting heart rate reveals, which challenges some preconceived ideas and suggests that by moving more, you could make your heart beat… less.
Australian researchers analyzed the heart rates of more than a hundred athletes and around forty sedentary people using 24-hour monitoring. Their observation is clear. Athletes have an average of 68 beats per minute, compared to 76 for untrained people. Compared to an entire day, this is equivalent to approximately 97,900 beats for the former, compared to 109,400 for the latter. That's a saving of around 11,500 daily beats, as summarized by Professor Andre La Gerche of the Victor Chang Cardiac Research Institute, cited by SciTechDaily.
This difference is explained by a well-known phenomenon of the trained body: the hearts of active people become more efficient, capable of sending more blood with each contraction. As a result, it can beat more slowly without reducing the oxygen supply. The study, published in the journal JACC: Advances, confirms that a sedentary lifestyle imposes a much heavier workload on the heart than regular physical activity.
Lower resting heart rate for better living
In an active adult, the resting heart rate can be as low as forty beats per minute, compared to an average of seventy to eighty for the general population. This drop is not trivial. It reflects better adaptation of the autonomic nervous system and increased flexibility of the heart muscle. Clearly, a heart that beats less often, but stronger, lives better.
The researchers point out that this internal economy is accompanied by better longevity and a notable reduction in the risk of cardiovascular diseases. By improving venous return and general circulation, physical activity also optimizes energy distribution and reduces the metabolic load on the organs.
This is what the Australian team explains. Even if the effort occasionally increases the heart rate, the following twenty-three hours of rest more than compensate for this increase. The net effect therefore results in an overall saving of beats over the day.
This observation goes beyond simple figures. In reality, it reflects a remarkable physiological balance. A well-trained heart does not beat more, it simply becomes more efficient. So each pulse uses less energy for the same result. At the same time, this improvement is accompanied by other measurable benefits. We note more optimal oxygenation, more stable blood pressure and better psychological resistance to stress.
When too much exercise becomes counterproductive
While moderate training boosts health, excess sometimes reverses the benefits. The researchers compared their results to public data collected on Strava during the 2023 Tour de France. Professional cyclists accumulated more than 35,000 beats per stage, well beyond the daily average of amateur athletes. These extreme loads show that the heart can temporarily exceed its adaptation capacities when the effort continues for too long.
This occasional excess does not mean that the sport is dangerous, but it reminds us that a balance exists. Maximum benefits are obtained when the body finds its zone of regularity. One where the heart beats slowly most of the time, while still being able to speed up briefly without becoming exhausted.
Counting your beats becomes a new way to assess your fitness. It’s no longer just about keeping up with the training. Indeed, the recovery of the heart and its ability to slow down are just as important. Thanks to connected watches that record every pulse, this invisible economy finally becomes measurable. Everyone can learn to listen to their rhythm and preserve their inner motor.
Basically, the lesson of the Australian research is contained in an implicit sentence. The heart does not wear out from beating, it wears out from not moving.
