What is zone two cardio?

Zone two cardio is a type of cardiovascular exercise where your heart rate and breathing are elevated, but you can still sustain a conversation. Pushing beyond this would make it difficult to speak without pausing for breath. While precise monitoring with heart rate monitors is challenging, the main aim is to maintain this moderate level of exertion. This can be achieved through activities such as jogging, rowing, cycling, or swimming, generally for 60 to 75 minutes. The intensity can be adjusted, for example by slowing down when encountering steep hills, to stay within this zone. It's a way to build endurance without excessive fatigue. 1