She's glad he asked no questions first, she feels it would taint the experiment, but she can see the flush beginning at his throat. It reminds her a little of when she purposefully made Jamie sick, to see if she could manufacture symptoms of an outbreak. At least John won't go through that sort of discomfort in the Horizon.

"The counting is so I know how long it takes for the effects to kick in." Already she's writing things down; the cinnamon was adjusted to be a bit less thanks to Annabeth's notes, and the thermogenic leaves increased to compensate.

"How are you feeling? Pleasantly warm?" She's already feeling a bit proud of herself for this, to see a visible result very clearly before the ten seconds are up.