[Surprise registers on his face when Ciel inquires after his health. Does he really look that haggard? He wonders if concern for his well-being has been on her mind for a while now, or if training has been more rough on him than he realized.]

I'm well, [he assures her. But, because he assumes she wouldn't have asked unless she judged him as looking especially sickly, he adds,] My health can be somewhat inconsistent, but I promise that I've been taking care of it. Thank you for asking.

[There's no need for him to go into excruciating detail over a polite inquiry. The truth is that Liem's eating and sleeping habits have never been ideal, and the new situation he's found himself in hasn't helped any. Nonetheless, he's had enough practice managing his "condition" to know just how far he can safely push himself. He wouldn't still be out here if he was in danger of fainting in the middle of the courtyard.]