On: Cardio fitness is a strong, consistent predictor o...

[SamPatt]

It's the same with lifting and adding muscle mass.

If you've never lifted before and you hit the gym consistently and have the proper diet, you will get some serious "newb gains." The first year can be amazing.

But if you've lifted seriously for a decade, it's totally different. Muscle mass is very hard to add now.

Cardio gains from a coach potato introducing a serious routine will be incredible. I went from not being able to run more than 30 seconds to running a 5k in 4-5 months, and that's without pushing myself extremely hard.

[pepa65 → SamPatt]

Why would you want to add muscle mass when you've lifted seriously for a decade?

[SamPatt → pepa65]

Many bodybuilders are aiming to add as much muscle mass as their genetic potential allows, which can take more than a decade.

The point is about how the body adapts.