Marina Pavlovic Rivas, co-founder and CEO of Eli Health, reveals a revolution in personal health monitoring through advanced wearable devices. They discuss the journey from primitive step counters to sophisticated devices, such as continuous glucose monitors (CGMs) and the world's first instant hormone monitoring system by Eli Health. The conversation delves into the new cortisol testing kit from Eli Health, exploring its implications for understanding stress, sleep, metabolism, and overall health. Rivas explains the process of using the device, its integration with a smartphone, and how AI helps interpret the hormone data for actionable insights. Future plans for Eli Health's hormone monitoring technology, including progesterone and testosterone, are also discussed, offering a glimpse into the evolving landscape of self-monitoring and personalized health.