Best 3 Unique Wearables I Use!
In a Nutshell
The video highlights three advanced wearables that go beyond standard heart rate and GPS tracking: the Flow Bio sensor for real-time sweat rate and sodium loss, the Core sensor for monitoring core body temperature to prevent overheating, and the Train Red NIRS sensor for tracking local muscle oxygen saturation during exercise. These tools enable personalized hydration, safer pacing in heat, and more precise intensity management by showing when muscles are operating above sustainable thresholds. The creator also briefly notes supporting gear like Zwift for indoor training and Meta smart glasses for long runs.
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During a normal run, up to 2 L of water and 2,000 mg of salt can be lost. Core body temperature can reach fever-level temperatures. When exercising hard, muscle oxygen saturation continuously drops, indicating operation above the sustainable threshold and accumulation of fatigue. Before measuring these parameters with consumer-grade wearables, these effects and their scale were unknown. A few years ago, only real athletes and elite amateurs had the opportunity to measure these parameters, but now they are accessible to everyone.
Rob is a post-doctoral scientist specializing in biological data analysis. The video examines data from three sensors that go beyond what most watches provide. Most common wearables such as Fitbit, Garmin, Coros, and Apple Watch focus mainly on heart rate, GPS, sleep, blood oxygen, and derived metrics like chances of high blood pressure. These parameters were easier to develop early on and represented low-hanging fruit. Niche companies have now gone beyond these metrics.
Three sensors are presented that influence behavior, provide insight into the body, and help exercise at safe intensity. References were obtained for two out of three devices. Additional workout equipment that improves training is also mentioned.
The Flow Bio sensor is worn on the biceps or attached to a chest strap such as the Fitbit Aria. It estimates fluid and sodium loss during exercise to provide personalized hydration advice. Generic advice recommends fixed amounts of fluid per hour or electrolyte tablets, but sweat rate and sodium concentration vary enormously between individuals. Two athletes doing the same workout under the same conditions can lose very different amounts of fluid and sodium. Within the same person, sweat losses change depending on temperature, humidity, exercise intensity, clothing, acclimation, and duration.
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