If you are a fan of numbers, tracking changes in your HRV can be a great way to see how your nervous system reacts to the environment, exercise, emotions, thoughts, and feelings. It will also help you understand how you can bring more physical activity and mindfulness into your life. Monitoring your HRV may be a great motivation to adopt some behavioral changes. When tracking HRV, you can monitor positive and negative trends in fitness and picture what is happening in your body system on a day-to-day basis by merely taking measurements via your phone camera or a smartwatch. You will see how your actions or behavior influence your health, and in turn, you will be able to improve it and lead a better life. Moreover, you can see how negative emotions and stress affect all systems of your body. Chronic stress can cause changes in the neural brain architecture responsible for stress responding. Learning how to detect and manage stress to prevent health complications such as cardiovascular risk associated with stress is vital for those who want to lead a healthy lifestyle.