I don't really use it much.

[Which he's quick to point out, and obviously sort of fidgety, because — well, he understands Jotaro's misgivings even if he didn't at first. After a short pause, he pulls away a little and straightens his shoulders.]

Mm, it's called life shot, it . . . affects the way you perceive the world around you, so it feels like you're slowing down. Or time's speeding up.