You don't. You have to build it up then drop whatever extra weight(Specifically body fat %) you gained while trying to retain the muscle. That is how you get definition.
You can define ageing as the process of growing old.
yes
You have been growing and your muscles as still developing.
a greater than normal physical demand on muscles
Plowed but left unseeded during a growing season.
Involuntary muscles are those that move without conscious control.
Lighter weights, but more sets. Reps should be at a good pace.
It explains the meaning of something. To define: To describe or outline the functional characteristics of a word or object.
Reflecting God while growing in communion.
define IT define IT
cardiac muscles
Involuntary muscles