Best Heart Rate Monitors (2025), WIRED Tested and Reviewed
Compare Top 5 Heart Rate Monitors FAQS We tested and recommend all of the heart rate monitors below, which do a pretty impeccable job. But what do all these terms mean? Heart rate zones: If someone tells you they’ve been doing 80/20 training, they’ve been doing heart rate zone-based workouts. Heart rate zones are an easy way to break down your range of effort during exercise. Zones go from 1 to 5, with 5 indicating working at 90 to 100 percent of your maximum heart rate. Zone 2 represents tra