[When Mettaton says that its quick enough to see where his concerns lie - and obviously, Bruce has of course thought of that. He's not so foolhardy as to risk himself out like this... despite his history.]

I know. [He gives a small smile, hopefully of reassurance.] But I'll make sure it won't happen to me, so don't worry. If I do start to get tired I'll be sure to get back to my room.

[He's got it all covered.]