 This study found that high-intensity interval training, HIT, resulted in improved cardiac function in patients who had recently undergone heart transplants. Specifically, HIT led to increased global longitudinal strain and decreased end diastolic volume compared to those who received standard care exercise-based rehabilitation. Additionally, there was a trend towards improved microcirculatory function in the HIT group. This article was offered by Lars Gullestad, Bjorn Benz, Kari Nitrin, and others.