Don’t know. However, the heart is a muscle. Don’t think that the Kidney or Gallbladder etc. qualify as a muscle. Apparently the body shuts down Muscle growth etc. when Flu/inflammation hits.
The heart has to work harder to pump the sludging blood through the vasculature. Plus the sludging blood is not making it though the coronary arteries to supply adequate oxygen to the cardiac muscle itself.
Heart mussels? Never heard of them. Are they good? Fresh or salt water? And re testis. Did you know the word ‘testify’ comes because men used to grab their testicles to swear they were telling the truth, before the bible and whatnot I guess.