He saves the response to that until they actually run into each other, because he wants to see the look on Yuri's face when his response is,

"I think you've burned off enough calories," with a little smirk. He feels like he can push things like that a little-- he's carrying Yuri's marks too, and he's already all but said he's looking forward to Yuri taking him apart. "Do you have a place in mind?"

Otabek looks unfairly good for someone who hasn't slept anymore than Yuri has, but then, he's always kind of got a bit more of an understated style to him. It makes sense that he could roll out of bed into it and still look more or less the same.