A new study published in the *Monthly Notices of the Royal Astronomical Society* has revealed a previously unknown pattern of solar magnetic activity, identified through 40 years of helioseismic data. Researchers, including Sarbani Basu from Yale University, found that this internal 'biorhythm' indicates changes in solar activity that traditional observation methods failed to detect. The analysis of p-mode oscillations showed a gradual change in below-surface activity, particularly notable in the current solar cycle 25, which has exceeded expectations in terms of sunspot and radio activity. The study suggests that magnetic activity is becoming more confined near the Sun's surface, with implications for understanding space weather. The team plans to continue monitoring solar cycle 25, which is expected to conclude around 2030, to further explore the significance of these findings and their impact on solar activity predictions.