Metabolic age is a term that gets thrown around by fitness experts and even medical professionals, but what does it really mean? It turns out that there's a formula that will help you calculate your metabolic age, but there is more to it than just math.
A famous example of a person claiming to have reversed their metabolic age is American entrepreneur Bryan Johnson, whose anti-aging regimen has gone viral and became the subject of a Netflix documentary.
In this gallery, we explain what metabolic age is, how to calculate it, and how to reverse it. Click on.