A watch from the company Whoop. It is an American company specializing in fitness and health trackers, but it differs from traditional smartwatches. The basic idea behind it: it is not a device for displaying time or notifications, but rather a tool for deep analysis of your body and daily performance. Key points about Whoop: • Screenless band: Worn on the wrist (or other places) and focuses on collecting data rather than displaying it. • Sleep analysis: Gives you an accurate assessment of your sleep quality, how much you need to sleep, and whether your body has actually recovered. • Strain level: Measures the effort you exert daily, whether from sports or normal activity. • Recovery: The most important feature—it analyzes heart rate (HRV), sleep, and strain, and tells you if your body is ready to exercise or needs rest. And it comes with a 24-month free subscription.