A brief, well-designed online exercise lasting just 10 minutes may help reduce symptoms of depression, according to new research published in Nature Human Behaviour. The findings suggest that even small, accessible interventions can produce measurable improvements in mental well-being.
Researchers behind the study say the results challenge a common belief that overcoming depression requires intensive therapy, medication, or major life changes. Instead, the study indicates that learning simple psychological skills in a short session may provide meaningful support for people struggling with depressive symptoms.
The research project began with an unusual approach. In 2024, the research team took to social media to ask a question to mental health experts and the wider community: if they could capture just 10 minutes of attention from 500 people experiencing depression, how would they use that time to help them.
The response was global. The team received 66 proposals from scientists, mental health app developers, students, and online creators. From these submissions, researchers selected 12 ideas they believed showed the most promise and developed them into structured programs.
These brief programs, known as “single-session interventions,” were then tested in one of the largest randomized controlled trials ever conducted for digital mental health strategies.
The interventions varied widely in design. Some were adapted from methods commonly used in face-to-face psychotherapy, while others introduced new concepts. One exercise involved a generative artificial intelligence–guided expressive writing activity designed to help users process emotions. Another was inspired by a widely shared Thai Life Insurance advertisement that highlights how small acts of kindness can add meaning to daily life.
All of the exercises were self-guided and took less than 10 minutes to complete.
To evaluate their effectiveness, the researchers recruited 7,505 adults in the United States and randomly assigned them to one of the 12 interventions or to a control activity. Participants in the control group completed a neutral task that involved learning about trout.
Participants answered questions about their mental health immediately after completing the exercise and again one month later. Each participant completed the intervention only once.
Immediately following the exercises, most participants reported feeling more hopeful and motivated to make positive changes in their lives. However, the longer-term results revealed that only two programs led to measurable reductions in depression symptoms after one month.
The two most effective interventions were called Interactive Cognitive Reappraisal, which teaches people to reinterpret negative thoughts in a healthier way, and Finding Focus, which encourages participants to identify manageable steps toward meaningful goals.
On average, the improvements were modest. The two most successful exercises produced about a 4 percent greater reduction in depression scores compared with the control group. While the change may appear small, researchers say the scale and accessibility of such programs could make them significant.
Because the interventions are short, free, and easy to access online, they could potentially reach large numbers of people worldwide.
Depression remains one of the most common mental health conditions globally, affecting an estimated 332 million people each year. Although treatments such as psychotherapy and medication can be effective, many people face barriers to care, including high costs, limited availability of therapists, and social stigma around seeking help.
The study provides early evidence that single-session digital interventions may offer a practical alternative for individuals who cannot easily access traditional mental health services.
Researchers emphasize that these short exercises are not intended to replace professional treatment. Instead, they could serve as a supplementary resource or an initial step for people who might otherwise receive no support. They may also benefit individuals waiting for therapy appointments or seeking additional tools to manage their mental health.
The next phase of research will focus on expanding access to these brief mental health resources and integrating them into different environments such as schools, social media platforms, and therapy waitlists.
Some organizations are already building on the findings. The team behind the most effective intervention in the study has developed a series of free five- to ten-minute programs designed to address a range of mental health challenges.
Researchers are also exploring how artificial intelligence could make future single-session interventions more interactive and personalized.
While depression can make it difficult for individuals to feel in control of their thoughts and emotions, the study suggests that even a short investment of time may provide a meaningful starting point for improvement.
According to the researchers, learning practical, evidence-based skills in just 10 minutes could represent a simple but valuable first step toward better mental health.
