What if hydration could be tracked as easily—and accurately—as your heart rate? On this episode of the Russo Edge Podcast, host Solomon Wilcots sits down with Professor Mark Kendall, CEO and founder of WearOptimo, to explore how hydration could become the sixth vital sign.

Mark explains the science behind microwearables—tiny sensors designed to measure hydration in real time—and why elite athletes, healthcare providers, and even elder care facilities are rethinking how hydration affects performance, cognition, and long-term health. Whether you’re a sports fan, healthcare innovator, or just looking to improve daily well-being, this episode offers a powerful look into the future of personalized health monitoring.