Running Stress Bar Chart Explained
The running stress graph is a visualization of your running stress score (RSS) over time, with your Critical Power (CP) changes overlayed.
RSS is a single number meant to help you understand how your day-by-day training contributes to your fitness. It quantifies how much you’ve trained, and takes into account the variety of intensity in your training.
RSS is relative to your Critical Power and won’t show up until you have generated a CP. Typically after three runs. Here is the equation:
RSS = 100 x training duration x (Power/CP)^K
Equations aside, RSS is a point system that awards a certain number of points to each of your runs based on your intensity and the duration of the run. The higher the intensity (percent of your CP), the more RSS/min you generate.