What do you mean by fresh meat _ fresh meat?

What does fresh meat mean? Is it human flesh?

"Small fresh meat" is used to describe actors, referring to young, handsome and muscular new generation male idols. Generally speaking, it refers to a handsome guy aged between 12-25, with pure personality, simple emotional experience and not much emotional experience.

There are also extended meanings to refer to virtuous girls aged from 12 to 18, with simple emotional experience and not much emotional experience.

Another meaning is very fresh meat.