This article explains how understanding your body's heart rate can help improve performance and recover quickly after exercise. It explains the importance of resting heart rate and how it can be used as an indicator of fitness level and recovery time. It also gives advice on how to improve heart health such as avoiding too many stimulants like caffeine, using heart rate variability breaths, and getting plenty of quality sleep. Finally, it emphasizes the importance of listening to your body, understanding your limits and pacing yourself during exercise.