Martin hums softly, considering the offer without removing his gaze from the middle distance. Much as it seems sort of inherently silly to have John draw him a bath, that would certainly help. But the effort involved extends beyond that; even the idea of hauling himself in and out of the bath, drying himself off, even doing anything but just sitting in the water... it all feels like a lot right now.

But to say so would feel hopelessly pathetic, so in the end he nods and murmurs, "Yeah, I suppose it wouldn't. That... that'd be nice." At least he'll have time to sit here and psych himself up while the tub fills.