Athletic heart syndrome (AHS) is a condition that commonly affects athletes and individuals who regularly participate in intense physical activity. It refers to the structural and functional changes that occur in the heart as a result of prolonged and intense exercise. Other synonyms used to describe AHS include athlete's heart, athletic cardiac adaptation, and sport-induced cardiac remodeling. While AHS is generally considered a benign condition, athletes should be aware of its potential complications, such as abnormal heart rhythms. Regular monitoring and evaluation by a healthcare professional can help ensure proper management of AHS and prevent more serious heart conditions from developing.