longevity science
Wearable Health Tech vs Biohacking Gadgets: Longevity Science Showdown
A budget smartwatch can indeed predict your healthspan by measuring key biometrics, and the most valuable device is the one that reliably tracks heart-rate variability and sleep without breaking the bank. In 2024, a cost-efficiency study found that smartwatches under $250 track heart-rate variability within a 7.5% margin of