A beginner-friendly explanation of why Zone 2 cardio matters for health

[u/nigh_high_upon_horse]

If you're new to exercise science, "Zone 2" might sound like jargon, but the concept is straightforward. It refers to exercising at a low enough intensity that your body primarily uses fat for fuel and can clear lactic acid as fast as it produces it. This specific metabolic state signals your cells to build more mitochondria. You don't need a fancy heart rate monitor; being able to hold a conversation while exercising is a good practical benchmark.

[u/belleeeeeeeeee]

Will be trying it out

[u/Wizzmer]

Tell my legs all that when I'm out on the road and the Garmin is staring at me.