Ask for a 'tonic massage' may seem simple. In reality, everyone puts something different behind the word. For some, it's a firm pressure. For others, it's mainly the idea of getting off the table with a freer back.
Finding the perfect vocabulary is not the most useful thing, but saying what the body accepts today is. It's less spectacular, and much more effective.

Saying hard or soft doesn't always suffice
A gentle pressure can be deep if it remains slow and precise. On the contrary, a strong pressure can become unnecessary if the body defends itself at each move. Massage is not a contest of resistance.
Before the session, it's better to give concrete references : tense neck, sensitive lower back, heavy legs, general fatigue, need for relaxation rather than being shaken. The practitioner will understand more quickly what to look for.

The body of the day always has something to say
An appreciated treatment last week may seem too intense after a bad night, a standing day or a period of stress. This is not a contradiction, it's just the body changing its mind. It has the right, even without warning.
The Traditional Thai massage often suits people who are looking for a more mobile job. The hot oil massage will be more natural if the goal is to slow down and relax.
During the session, one can still adjust
The right moment to speak is not only before starting. If a pressure surprises, if a zone is too sensitive or if the rhythm does not suit, it should be said. A short phrase suffices.
This avoids spending an hour being polite with your trapèzes. They have never asked for so much diplomacy.

