The cardiovascular system is complex in how it responds to acute and chronic exercise, and while valuable, using a heart rate monitor to support client training plans can be a daunting task. This lecture will cover cardiovascular adaptations associated with current training trends, differences in individual heart rate response based on multiple and potentially combined variables, and how to maximize sport-specific athletic performance training regimens. Learn how to make the most appropriate exercise modifications in real time and better prepare yourself to adapt your progressive training regimen over time.