10/15/2026
Heart rate variability is hands down the most misunderstood number on your fitness tracker. It is not your pulse, and a higher number does not automatically mean you are healthier than the person next to you. If your heart beats like a perfect, robotic metronome, your nervous system is actually trapped in fight or flight. In this clip, I break down the traffic light method I use to know whether to lift heavy or back off, and why comparing your score to anyone else is a massive mistake.