09/02/2026
We've talked about what happens inside the cell.
Now let's zoom out. 🫁
Your cells also need oxygen to support aerobic energy production.
Getting that oxygen where it needs to go requires several systems to work together.
Your lungs bring oxygen into the body.
Your heart and blood vessels help transport it.
Your muscles extract and use oxygen during activity.
And this is where VO₂ max enters the conversation.
VO₂ max reflects the maximum rate at which your body can take in, transport, and use oxygen during intense exercise.
So while NAD+ and VO₂ max measure or describe very different things, they help us look at wellness from two fascinating perspectives:
🔬 What's happening at the cellular level
🫁 How effectively the whole body performs as a system
Healthy aging isn't about one number.
It's about understanding how all of these systems work together.