

When you wake up in the morning, you’ll have a Recovery Score that’s based on your: This number will change as you go about your day. The data WHOOP collects from your activity in a given day - including both exercise and basic human existence - is calculated into a Strain Score. Users typically wear the WHOOP on their wrist with a comfy knit band, but the brand also offers several other wearable options, such as shorts and sports bras, that are compatible with the sensor.

It’s designed to be worn all day and night and collects data 100 times per second. The WHOOP 4.0 is a small device that uses sensors to measure your heart rate, temperature, and much more. In this review, we’ll dig into the details of the WHOOP 4.0 and share our take on the pros and cons, pricing details, and how it compares with other trackers. While folks of all activity levels can benefit from WHOOP’s insights, it’s definitely geared toward those who are already active. Unlike many other trackers and smartwatches, this one doesn’t have a screen - you can access the data your WHOOP collects only via an app. The WHOOP 4.0 is the brand’s latest iteration of its wearable tracker. But for folks who want to take a granular look at their exercise performance, sleep quality, and heart rate data, the WHOOP 4.0 provides a ton of data.

These days, there’s no shortage of fitness trackers that can help you keep tabs on your daily activity.
