The most common and most likely answer to this crossword clue is the 6 letter word PHYSIO
I've seen this crossword clue in Financial Times
P
H
Y
S
I
O
More clues leading to the result PHYSIO
- Effervescent-sounding old masseuse?
- Move your hips without hesitation — thanks to me?
- Treatment for the ear, face and heart of lion
- Therapist calling for sparkling water?
- Like some drinks, talking with old therapist
- Therapist sounds like bubbly character of zero significance
- Therapy with effervescent sounding ring to it
- Masseur‘s Perrier in franglais, by the sound of it
- Trainer whipped his pony? That’s not new
- After first-half loss in trophy, nothing is twisted but masseur‘s needed
Buddy explains!

The straight part
We know that "Masseur" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case masseur = physio.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 PHYSIO mean?
PHYSIO noun- A branch of biology that deals with the functions and activities of life or of living matter (as organs, tissues, or cells) and of the physical and chemical phenomena involved.
- The study and description of natural objects; natural science.
- A therapist who treats physical injury or dysfunction, usually with exercise.
- Therapy that uses physical techniques such as massage, ultrasound, heat, and exercise