Heart rate zones are a way to describe how hard you're working during a cardio workout, like running or cycling. The faster ...

Heart rate zones are how we categorize this effect ... where you can hold a conversation—or a leisurely bike ride. Zone 3 is ...

Active heart rate measures a person’s heart activity during exercise. People can use heart rate zones to optimize workouts by ensuring that the heart rate stays within the ideal range.

This secret to improving your cardiovascular health and endurance: zone 2 heart rate training. Zone 2 cardio rate training means working in one of five heart rate zones at 60-70% of your max heart ...