WHOOP 4.0 is a screenless, subscription-based fitness and health tracker designed for continuous monitoring of key physiological metrics. It tracks heart rate, heart rate variability (HRV), sleep stages, respiratory rate, skin temperature, and blood oxygen levels to provide personalized insights into recovery, strain, and sleep quality.
The device offers features like a daily recovery score, strain score, and sleep coaching to guide users on optimal training and rest periods. Additional functionalities include stress monitoring and personalized coaching through the WHOOP app.
The tracker is lightweight, water-resistant, and can be worn 24/7, with a battery that charges while in use. WHOOP is popular among professional athletes and fitness enthusiasts seeking in-depth, data-driven insights to optimize performance and well-being.