What do the following phrases have in common?

UNSUNG HERO
COMMON MAN
STATUESQUE MODEL
SWEDISH MEATBALLS
ENTHUSIASTIC LEARNER
REFRIED BEANS
SATISFIED MIND

HINT:
Each phrase conceals something.

Answers:

Hidden in each phrase are the abbreviations of the days of the week, in order:

unSUNg hero
comMON man
staTUEsque model
sWEDish meatballs
enTHUsiastic learner
reFRIed beans
SATisfied mind