Deepinder Goyal’s health startup Temple says it has discovered a biomarker called “Entropy” that tracks the body’s real-time metabolic cost. Multiple outlets report that Temple presents Entropy as a continuously updated metric derived from readings taken from the “temple region,” showing on the Temple home screen and updating every second. Temple describes Entropy as a live number intended to reflect changes in metabolic state during everyday activities and physiological factors, rather than relying on intermittent measurements.
According to Temple’s announcements shared publicly, Entropy values range from 1 to 250, with lower readings linked to deeper rest and higher readings associated with intense physical activity. The company also says lowest readings are seen in experienced meditators during deep meditation, while the highest values occur in elite athletes during peak exertion. Temple further claims that Entropy responds dynamically to inputs including sleep, stress, exercise, meals, caffeine intake, cold exposure, meditation, and strength training.
Reports also note that Temple has not released detailed technical documentation or underlying methodology, and that it has invited early access applications without providing pricing, hardware requirements, or peer-reviewed validation. Temple states it compared Entropy against a laboratory metabolic cart and reported stronger correlation than with heart rate, but independent verification is not described in the coverage.
