You cannot optimize what you do not measure. The best biohacking self-tracking products give you objective data on your sleep, heart rate variability, blood biomarkers, body composition, and more — so you can stop guessing and start making decisions based on evidence. Self-quantification is the backbone of effective health optimization.

I have worn, tested, and compared a wide range of wearable health trackers, continuous glucose monitors, HRV sensors, blood testing services, and body composition analyzers. The products in this collection stand out for accuracy, actionable insights, and long-term usability. Plenty of trackers collect data that never leads anywhere. These actually help you improve.

As a Certified Personal Trainer who relies on biomarker data with clients and in my own protocols, I know which metrics matter and which devices deliver reliable readings. Whether you are new to self-tracking or building a comprehensive quantified-self system, you will find trusted options here.

Some of these brands offer exclusive Outliyr discounts. Start tracking smarter below.