Proper breathing. What I mean by that is sometimes people speak really quickly, they forget to stop and breathe and all of a sudden they they're gasping for breath. Now, this isn't a problem if you're pausing the right way, and you're changing your speed. So, make a note. This is not a very common problem, but it does show up with people as they're practicing media interviews, and when they're doing media interviews, especially if it's a high stakes situation, perhaps a press conference. So you do want to get used to analyzing based on this metric as well.