health / fitness wearable trackers, including bands, smart watches, and smart rings, which brands come to mind?

Fitbit: Known for their fitness trackers, Fitbit offers a wide range of products that track everything from steps to sleep patterns.

Apple Watch: Apple's smartwatch not only has fitness tracking capabilities, but also a host of other features when paired with an iPhone.

Garmin: Known for their GPS systems, Garmin also produces a line of fitness trackers and smartwatches that are particularly popular among runners and other athletes.

Samsung: Samsung's Galaxy Fit and Galaxy Watch lines offer fitness tracking and smartwatch capabilities.

Xiaomi: Xiaomi's Mi Band series offers affordable fitness tracking.

Whoop: This brand offers a strap that tracks sleep, recovery, and strain to provide insights into your health and fitness.

Oura: Known for their smart rings, Oura tracks sleep, activity, and readiness.

Polar: Polar offers