Heart Rate Variability
Our heart rate has a direct link to our breathing. The amount of time between each heart beat is related to each breath. On the inhale our heart speeds up and on the exhale my heart rate slows down.
The less time between beats of my heart, which has a direct relationship to my breathing, means that my body is working even when I think it may not be. Thus I am under stress and not recovered.
More time between each beat, again related to my breathing, shows me that my body is in a state that is not at work, rather a state of readiness.
We can measure breathing and time between each heart beat , thus giving us what is called Heart Rate Variability. This measure shows us what our state of readiness to train is. If the time between beats is shorter, as it relates to my breathing, I am not recovered and my body needs rest. If the time between beats is longer, as it relates to my breathing, then I am recovered and ready to train.
We can use a finger sensor to track heart rate and while controlling a specific inhale and exhale rythm to capture heart rate variability. Using a mathematical formula we can get a number on a scale of 0-100. The closer we are to 100 the better our state of readiness to train.
This helps provide us with objective data that we can use in comparison to how we feel, so we can make a decision on how intense our training should be each day.