Jamie McCart, Hearts' defender, discusses the physical toll of recent matches against St. Mirren and St. Johnstone, resulting in injuries including a black eye. He criticizes the referee's decision to downgrade a red card to a yellow in the St. Mirren game. Hearts, currently in the top six, express confidence ahead of the Edinburgh derby against Hibs, highlighting their fighting spirit and key players like Shankland and Kabangu.