Serena Williams reveals where her signature tennis grunt came from

Serena Williams reveals where her signature tennis grunt came from. She was fascinated by Yugoslavian player, Monica Seles, when she was younger. Williams has become so used to grunting she now uses it as a breathing technique in her everyday life. The tennis ace has revealed she was inspired by Seles' 'cool' grunting.

Nearly two years after retiring from tennis, hardcourt legend Serena Williams appeared on the YouTube show 'Hot Ones' to discuss several topics including why she grunted so much during matches.