Why we chose this
Three of us have worn Whoops for a combined eight years. The 5.0 is the first generation where the data quality is good enough during workouts that we don't double-up with a chest strap. That eliminates the only remaining reason to wear something else, and the subscription math becomes worth it for any athlete training more than three times a week.
The review
Whoop's fifth-generation strap is smaller, lighter, and finally measures blood pressure trends in addition to heart rate variability, sleep, and strain. The pitch hasn't changed — no screen, no notifications, just continuous sensors and an app that tells you whether to push or pull back today — but the execution is now refined enough that we'd recommend it over the wrist-worn alternatives for serious athletes. The new ScarletBlue sensor array is meaningfully more accurate during high-intensity intervals (the old version struggled with sprint efforts), and the battery slider charges on the device, so you never take it off. The subscription model is still the friction — $239/year minimum — but for athletes who actually act on recovery data, it's the most useful piece of fitness tech we test. The Whoop band lives on your arm, in your sleep, in the shower; the lack of a screen turns out to be a feature.
