pull a heart muscle
v. phr.— «North finished Friday’s game with import forward Paul Maley out after reinjuring his back, Tonny Jensen appearing to have pulled a heart muscle, and only Darryl McDonald and Pat Reidy able to leave the floor with their reputations intact.» —“Braveheart Sixers come back into finals focus” by Boti Nagy The Advertiser (Adelaide, South Australia) Sept. 30, 1996. (source: Double-Tongued Dictionary)