Hints about line crossed during exercise drinks (7)
I believe the answer is:
tipples
'drinks' is the definition.
(I know this)
'hints about line crossed during exercise' is the wordplay.
'hints' becomes 'tips' ('tip' can be a synonym of 'hint').
'about' is an insertion indicator.
'line' becomes 'l' (used when specifying particular lines from a poem).
'crossed during' is an insertion indicator.
'exercise' becomes 'pe' (Physical Education).
'l' put inside 'pe' is 'ple'.
'tips' going around 'ple' is 'TIPPLES'.
(Other definitions for tipples that I've seen before include "Drinks moderately" , "Drinks alcohol regularly" , "Is in the habit of drinking alcohol" .)