The ubiquitous rise of wearable technology in health began with devices like pedometers and early smartwatches, laying the groundwork for a revolution in personal health tracking. These foundational wearables primarily focused on quantifying basic physical activity: step counts, distance traveled, and calorie expenditure. Their initial appeal lay in their simplicity and the instant gratification of seeing one’s daily efforts translated into tangible metrics. This initial phase democratized access to
