By the judgment of the High Council, Anakin Skywalker, padawan to Master Elesse Vendar, is ready to seriously pursue her Trials of Knighthood. She's young for it, especially by modern standards - barely eighteen - but she's made remarkable progress under Elesse's tutelage, they hold, and she's already passed the Trials of Courage, Skill, and Insight through the course of her apprenticeship. She'd passed Courage and Skill at sixteen in successfully holding off a Sith Lord until her Master could join her in the fight, and she passed the Trial of Insight throughout the year after, as she pursued treatment for her own psychosis, recognizing the tricks her own mind played on her as illusions.
(There'd been a debate on if this counted for the Trial of Spirit, but - not quite, the Council believed, and none of them were privy to the true challenges Anakin had faced alongside Elesse in that year.)
(None of them were privy to the full details of her undercover mission with Elesse, the one that ended in her crossing lightsabers with a Sith. Certainly not to the ways Elesse tortured Anakin, to maintain and further their cover - that would count for the Trial of Flesh several times over, though Anakin doesn't exactly regret having an excuse to demonstrate her pain tolerance again.)
The Trials don't have to be back to back - they rarely are, especially when intentionally administered - and by tradition, she should pass the Trial of Flesh before undergoing the Trial of Spirit.
There's traditional methods, which one chosen idiosyncratic to the padawan, the Master, and the whims of current fads. But the Trial of Flesh always involves overcoming and pushing through great hardship - tremendous pain, sacrifice, losses that sear one to the bone. (Sometimes literally. 'Interrogation techniques' are a popular fallback, and the worst of those are, well. Some would find the description of having their flesh slowly burned away gruesome. Anakin had needed to excuse herself from her and Elesse's common room after reading about it.)
And so, to her Elesse, tone light and teasing and trying not to sound too desperately breathy -
"The real problem for this Trial might be finding a pain that's a genuine hardship for me to bear." Then, more seriously: "I'd - like this to be something you do, though, especially if we'll need to challenge my limits."
(That's what Trials are supposed to do. Life isn't kind, and doesn't care much for safewords.)