Regulation of Energy through Music Listening and the Influence of Diurnal Energy Levels
This study analyzes over 11,000 natural listening episodes to demonstrate that the diurnal energy cycle significantly moderates how individuals use music for self-regulation, with the success of these regulatory efforts depending on the alignment between the listener's goals and their current energy trajectory.
Original paper licensed under CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/). This is an AI-generated explanation of the paper below. It is not written or endorsed by the authors. For technical accuracy, refer to the original paper. Read full disclaimer
Every day, our bodies run on a biological clock that dictates when we feel alert and when we feel tired. This rhythm, known as the circadian cycle, is a fundamental part of human life, governing our sleep, our mood, and our physical energy. Just as the sun rises and sets, our internal energy levels naturally climb to a peak in the afternoon and gradually slide down toward night. While we often try to manage these shifts with coffee or naps, many people turn to a more accessible tool: music. We instinctively know that a fast-paced song can wake us up, while a slow melody can help us unwind. But science has rarely looked closely at how this daily biological rhythm interacts with our choice of music. Does the time of day change how we use music to regulate our energy? And does the natural ebb and flow of our own biology make music more or less effective at doing its job?
A team of researchers from universities in Finland, the United Kingdom, and Australia set out to answer these questions by observing real people in their daily lives. Instead of asking participants to remember what they did in the past, the researchers used a method called experience sampling. This approach involves checking in with people at random or specific moments while they are actually doing something, capturing their thoughts and feelings in real time. For this study, they combined two massive datasets. The first came from an app called MuPsych, which asked over 1,500 participants to report their feelings the moment they started listening to music on their phones, and again five and fifteen minutes later. These participants told the researchers how energetic they felt, what they hoped the music would do to their energy (make them more alert, keep them the same, or make them calmer), and how energetic the music itself seemed. The second dataset came from a different app called Mappiness, which had collected over two million reports from more than 34,000 people about their general state of alertness at random times throughout the day. This provided a massive, population-level map of how human energy naturally rises and falls over a 24-hour period.
By weaving these two streams of data together, the researchers discovered that our relationship with music is deeply tied to the time of day. The most common goal people had when listening to music was to increase their energy, a desire that was strongest in the morning. As the day wore on, this urge to get energized faded, and by the evening and night, people were much more likely to want to decrease their energy or simply maintain their current state. Interestingly, the researchers found that people often tried to boost their energy before their natural biological clock had even reached its peak. In the morning, listeners were already aiming to get more alert, effectively using music as a proactive tool to jumpstart their day before their own internal energy levels had naturally risen. This suggests that music acts as a kind of pre-emptive strategy, helping us meet our energy demands before our bodies are naturally ready to provide them.
The study also revealed a crucial factor in whether music actually succeeds in changing how we feel. It turns out that the direction of our natural energy cycle matters more than how high or low our energy is at that moment. When a person's goal to change their energy matched the direction their body was already moving, they were more likely to succeed. For example, if a person wanted to feel more alert and their natural energy was already rising, the music was more effective. Conversely, if they wanted to feel more alert but their body was naturally winding down for the night, the music was less likely to work. This finding challenges the idea that music works the same way regardless of context; instead, it shows that the biological clock acts as a background force that can either help or hinder the music's ability to regulate our state.
Perhaps the most surprising discovery was the gap between what people felt and what the music actually sounded like. The researchers compared the listeners' subjective ratings of how energetic a song felt with an objective computer analysis of the song's audio features. While the listeners' perceptions of music energy changed slightly throughout the day, the actual computer-measured energy of the songs remained almost entirely flat. This means that the same song might feel energetic in the morning and less so in the evening, not because the song changed, but because the listener's own state and expectations shifted. It suggests that our perception of music is not a fixed property of the sound itself, but a dynamic experience shaped by our own biology and the time of day.
These findings offer a new way to understand the role of music in daily life. It is not merely a passive soundtrack to our routines but an active tool for self-regulation that is deeply intertwined with our biological rhythms. The research indicates that the effectiveness of music as a tool for managing energy depends heavily on when it is listened to. For the average person, this means that the timing of a playlist might be just as important as the songs themselves. For professionals who use music to help people, such as therapists or coaches, understanding this timing could be key to designing better interventions. Ultimately, the study confirms that our daily lives are not just a series of random moments, but a structured cycle where our biology and our choices constantly interact, with music serving as a powerful bridge between the two.
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