European male with female outside, muscular types (2-3)

'muscular types' is the definition.
The definition and answer can be both people as well as being plural nouns.
Perhaps there's an association between them I don't understand?

'european male with female outside' is the wordplay.
'european' becomes 'e' (abbreviation e.g. EU).
'male' becomes 'm' (common abbreviation).
'with' says to put letters next to each other.
'female' becomes 'hen' (female chicken).
'outside' means one lot of letters goes inside another (some letters go outside others).
'e'+'m'='em'
'em' put inside 'hen' is 'HE-MEN'.

Can you help me to learn more?