Sleep clinic study (5)
'sleep clinic study' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for apnea that I've seen before include "that'll make you catch your breath?" , "Loss of breath" , "Cessation of breathing during sleep (US spelling)" , "stopping breathing in US" .)
'sleep clinic study' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for rem that I've seen before include "radiation unit" , "Sleep stage when dreaming occurs" , "Phase in sleep" .)