(idiomatic, chiefly in the negative) Someone is emotionally invested in (something); someone does (something) wholeheartedly.

Alternative form of the heart wants what it wants

(medicine, cardiology) Any disease caused by the accumulation of fatty deposits in the coronary arteries that supply blood to the myocardium.

(medicine) A heart transplant operation in which the donor heart is kept full of blood and continues to beat in a machine between donor and recipient.

(idiomatic, usually reflexive, dated) To make someone more resistant to something.

(idiomatic) To cause a person to feel grief, disappointment or sadness.

(idiomatic) Until satisfied; as much as is wished.

(idiomatic) An admonition to oneself to calm down when overly excited, especially in terms of romantic attraction.

(medicine) A syndrome marked by weakness, edema and shortness of breath, due to the inability of the heart to circulate the blood adequately to the lungs and other tissues.

A wearable device that allows a user to measure their heart rate in real time, usually consisting of a chest strap transmitter and a wrist receiver.