To improve heart health, incorporate high-intensity interval training, monitor key heart-related factors, and prioritize relaxation to manage stress. 

The traditional approach to cardiac rehab involved low to moderate-intensity aerobic exercise for patients who had heart trouble. However, recent research has shown that high-intensity interval training (HIIT) is more effective in improving the heart’s peak aerobic capacity, reducing belly fat and systolic blood pressure, and enhancing mood. To increase aerobic fitness, healthy, younger-aged gymgoers should try incorporating HIIT into their exercise routine. In addition to exercise, it’s also important to monitor and improve other heart-related factors such as resting heart rate, heart rate recovery, sleep, and daily activity levels. It’s also essential to prioritize relaxation and manage stress, which can have a significant impact on heart health. 

Source: https://www.menshealth.com/health/a35473860/protect-your-heart/