<p>➀ Professor Mario Nadj at the University of Duisburg-Essen has developed a method using machine learning and electrocardiogram sensors to predict and enhance the 'flow' state, a phase of deep concentration.</p><p>➁ This method can predict the flow state almost in real-time, allowing for uninterrupted determination unlike traditional methods that rely on self-reports.</p><p>➂ The research aims to reduce interruptions and improve productivity, with potential applications in both professional and musical settings.</p>