Therapist calling for sparkling water? (6)
I believe the answer is:
physio
'therapist' is the definition.
(physio is short for physiotherapist)
I can't explain the remainder of the clue.
Can you help me to learn more?
(Other definitions for physio that I've seen before include "I, Sophy (anag.)" , "Manipulative type" , "manual worker" , "Member of medical team" , "Masseuse maybe" .)