u/Maslakovic

Looks like Garmin is working on a new Muscle Battery metric. They filed a trademark in late Feb for this. Which means a wearable with a sensor capable of measuring muscle oxygenation.

https://gadgetsandwearables.com/2026/04/10/garmin-muscle-battery/

The language strongly suggests a recovery-first wearable designed for continuous wear, with a focus on sleep, training load and daily readiness. So essentially a Whoop competitor. They filed the trademark on February 25th.

https://gadgetsandwearables.com/2026/04/09/garmin-cirqa-trademark/