. >> i'm real suy >> reporter: edf heights, th12olfas to finish aese,ut decides torn. with some coen >> you're fi. >> reporter:- s. it feels so gonqr ur fears. >> you get psoow, something tt y nervous or eh aut being able goran with your fried veou friends help y a wk through somofroemy may be hav ca ri experience. >> reportere en, t challenge, co f, making this c thaju an extreme ntut phenomenon,asmi aew tradition. jacob rascon, wslak arrowhead cor >> cool. >> my kind of camp. >>> coming up, a big question this morning. will she run? the stop hillary clinton is making today that has more people convinced she's putting together ath presidential campaign. >>> you'll notice, it feels different o there today. right, chuck? >> sure does. those south breezes of yesterday and the raindrops are all long gone. we get a north breeze that's going to make it cool today. but there are indeed warmer days not so far away. we'll see y iw thhe full forec

grunting ] maria sharapova grunting on the court on sunday, while she lost, maria is the undisputed sque edfo the journal of strength and conditioning research, grunting in tennis increases the ball's speed, making it travel nearly 4% faster. eight-time grand slam champ monica seles, one of the first grunters. since then, the williams sisters, even novak known to let out the ear-pierciing roars. some on par with a chain saw. some say it's annoying. martina called it cheating. >> it can be a problem when you can't hear the ball hitting the racket. you react to the sound. >> reporter: like it or not, grunting in tennis may be getting a whole lot louder. and while this study focused on tennis, researchers say grunting in any sport can boost your performance, swinging a bat or punching in boxing. that extra burst tightens the core to give you the added boost. >> it's about breathing. >> it's the exhale. >> if you were holding your breath and trying to exert, you can't do it. >> weight lifters grunt. >> ryan and i were playing badminton. >> ping-pong. >> it's an intimidation tactic. do you grunt?

that doesn't mean that there edf aren't fundamental changes coming in terms of already herea in termsthe model of education that be provide. i'm an information technologist. i have seen the impact for 40-odd years of my career. information technology is having a major affect. but it has had a major affect m for the last 40 years. to me, that affect is more increme incremental. i'm not somebody that believes it's going to collapse tomorrow and become a new model. i think it'selic v going to cha. i think it's going to keep changing. the chairman of our board says that all university administrators should make up scared every day about where the changes might go. but i think so far what we're seeing is incremental but constant change as opposed to complete paradigm change withins theta institution.mplete >> if you had to look at one thing you would say universities have to do to say competitive, what would that be? >> well, i think clearly where we started the interview, they have to remain affordable. i give an example of that the fact that we, last year, had our lowest ever -- at least