Exercise and mood: everyday movement boosts energy

Most studies of exercise are conducted in laboratories. Volunteers run on treadmills, complete questionnaires about their mood, then return home.

This gives researchers tightly controlled information, yet offers little insight into what occurs throughout the remainder of participants’ daily lives.

A group of scientists therefore followed more than 8,000 people during their normal routines. Wrist sensors monitored their movement, while phone prompts asked them at intervals how they were feeling.

The findings differed from what the team had anticipated.

What motivates people to move

Encouraging people to be more active remains difficult, and knowledge by itself has never provided the answer.

Researchers began to consider whether mood, rather than public-health campaigns, may be what truly gets people off the sofa.

Working with collaborators in Salzburg, Karlsruhe and Mannheim, the team explored a more straightforward question: how do people feel before and after the small movements that make up an ordinary day?

Professor Markus Reichert led the project at Ruhr University Bochum (RUB).

He had spent years examining physical activity and mood beyond laboratory settings. This analysis was intended to clarify a long-standing and conflicting body of evidence.

“It has long been known that physical activity has a positive effect on well-being, but we used to only have evidence of this from lab and cross-sectional studies,” said Reichert.

Inside the meta-analysis

The scientists combined 67 individual datasets from 14 countries. Their analysis covered 8,223 participants, who completed 321,345 mood check-ins on their phones.

Accelerometer data - collected by wrist-worn sensors that capture every movement - contributed almost one million hours of monitoring.

Previous research, including a review undertaken by the same team, had produced mixed results. This dataset was designed to settle the issue.

Exercise and mood

People generally felt better after moving more, but they were also more active after feeling better. The central finding therefore works in both directions, with neither direction clearly prevailing.

This relationship was seen within individuals, comparing their better and worse days, and between participants: people who were more active overall tended to report better moods than those who were less active.

For the first time, large-scale real-world data confirmed both directions of the association.

Energetic arousal was almost universal

One result stood out sharply. More than 95 percent of participants experienced greater energy either before or after physical activity. Such consistency is unusual in this field of research.

Researchers describe this state as energetic arousal: feeling awake, alert and ready to act.

Compared with sitting, brisk walking was associated with a 0.62-point increase on a 4-point energy scale - the largest rise recorded for any mood measure in the study.

Emotional changes after exercise

In these data, movement did not make people feel calmer. In fact, many participants said they felt less calm.

When the researchers compared relaxation before and after activity, the result moved in the opposite direction. Walking rather than sitting was associated with a 0.22-point fall on a 4-point calmness scale.

Negative emotions - sadness, anger and anxiety - changed very little. Participants did not report less anxiety after walking, nor greater sadness before sitting down.

An association that features prominently in popular wellness coverage was absent from these results. That absence is itself a meaningful finding.

Researchers had long expected activity to reduce negative emotions immediately. Data gathered across thousands of everyday days do not support that expectation, at least in terms of an instant effect.

Larger emotional shifts may require more activity, a longer period of time, or different forms of movement.

Who benefits most

Average results conceal an important detail: individual responses varied, in some cases substantially.

A small proportion of participants felt worse either before or after being active. Those with the lowest initial mood levels, however, benefited the most.

“Our study also shows that persons with low well-being benefit in particular from physical activity,” said Onur Güntürkün, a co-author at the Ruhr University Bochum.

Those who began in the poorest mood experienced the greatest improvements. This suggests that the greatest value may lie not with people who are already active, but with those whose mental health is in a difficult state.

Broader implications of the study

The message is not simply that exercise is beneficial, as that was already established. The new evidence is that the same reliable effect appears in everyday movement, rather than only in planned exercise.

The 0.62-point energy increase associated with walking instead of sitting was not limited to a laboratory. It emerged throughout ordinary daily life.

The findings also direct researchers beyond mood scales and towards biology.

Recent research, including a 2022 study into how gut microbes might influence the desire to move, suggests that a physical process may underlie the mood figures.

For doctors treating patients with low moods, real-life evidence now supports a practical shift. The case for prescribing any form of movement has become stronger.

“Now our job for the coming years is to identify additional personal and contextual factors that can explain the differences in the correlations,” said Reichert.