You may have heard the term VO₂ max before — especially if you’ve ever used a fitness watch or done any kind of endurance training. It sounds complicated, but the idea is actually pretty simple.

VO₂ max is a measure of how much oxygen your body can use when you’re working really hard.

Think of it as your body’s engine size.

The higher your VO₂ max:

• The more oxygen your muscles can use
• The longer you can work without getting exhausted
• The better your heart, lungs, and muscles work together

In plain English:

👉 A higher VO₂ max means you can move faster, longer, and with less effort.

But How Do You Improve VO₂ Max?