Trackers (Body Worn)
Resources that enable us to track our physiological parameters that are worn on the body, e.g. a watch or ring
4 Resources in Trackers (body-worn)

Muse meditation headband
A smartheadband that shows brain activity to optimise meditation and sleep

Oura ring
A ring-worn tracking device

Retimer glasses
A wearable sleep tracker that also intervenes with light

Whoop
Body-worn tracking bands and garments