biohacking devices 8

https://list-wiki.win/index.php/Biohacking_Machines_Gain_Traction_Among_Investors_and_Health-Conscious_Consumers

I've been tracking my sleep with a small ring that monitors heart rate and oxygen levels, and it's wild seeing how caffeine really messes with my deep sleep. My friend uses a neurofeedback headband during meditation to improve focus, and she swears by it for reducing brain fog.