Podcasts Health & Fitness Fitness Ben Greenfield Life The Man Who Has Single-Handedly Tested Nearly Every Self-Quantification Device On The Face Of The Planet.

The Man Who Has Single-Handedly Tested Nearly Every Self-Quantification Device On The Face Of The Planet.

Published: April 2, 2016, 8:30 a.m.

Meet Ray Maker (pictured above). Via his website "", and his , Ray single-handedly tests, reviews and reports on nearly every self-quantification device that hits the market, including the latest devices from established players like Garmin and Polar,...