The most common and most likely answer to this crossword clue is the 7 letter word LIE-INS
I've seen this crossword clue in Financial Times
L
I
E
-
I
N
S
Buddy explains!

The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does LIE-INS mean?
LIE-INS noun- A period spent lying in bed for longer than usual after one has woken up.
- A form of protest where a group of people lie down in a public area.