There are many fitness trackers that claim to help users log more sleep. Whether it’s through behavioral insights, data-driven trend analysis, or educational content, companies are eager to enter our bedrooms. The Muse S, now in its second generation, wants a place on your pillow. With built-in sensors, the headband leverages an electroencephalogram (EEG) to measure brain activity, heart rate, and breath, plus sleep stages and much more. Unfortunately, while the Muse S excels in real-time biometric feedback and meditation guidance, it left me with a lot less than 40 winks.

Muse S (Gen 2)

About this article: I tested the Muse S (Gen 2) for one week connected to a Samsung Galaxy A51 as well as an iPhone 11 Pro Max. The unit was provided by Muse, but Muse had no say in the direction or published content.

What is the Muse S (Gen 2)? Testing a unique alternative to wrist-based tracking

A Muse S Gen 2 headband hangs from a user's headboard.