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Want to psych out your opponent? Grunt!

Portuguese tennis star Michelle Larcher de Brito has been booed off the court for making loud banshee-like noises.
Portuguese tennis star Michelle Larcher de Brito has been booed off the court for making loud banshee-like noises.Patrick Kovarik/AFP

Scott Sinnett, a psychology professor at the University of Hawaiiwhich we've written about beforeloud shrieks and grunts at least one high-profile lawsuitbanshee-like grunts and shrieks subway train or a motorcycle, and it's almost as loud as a rock concertcomments.Find The Body Odd on Twitter and on Facebook.