How accurate is the Whoop 4.0 heart rate monitor?

Wearable fitness technology has grown rapidly, with various options designed to help individuals monitor their health and optimize their performance. Among these devices, fitness bands have become particularly popular. These bands track multiple metrics, such as heart rate, sleep quality, and physical activity levels, providing users with insights to enhance their overall well-being. The Whoop… Read More »Whoop 4.0 Band Review: The Best Fitness Tracker for Performance in 2025