The Training State graph plots your daily Strain and Recovery values relative to ‘Optimal Training’. ‘Optimal Training’ refers to the ideal amount of Strain to increase fitness while avoiding burn-out. In physiological terms, this region has typically led to higher HRV levels the next day. When analyzing your training state, it’s important to consider the grouping of daily values.
For example, if the majority of a week’s daily values are above the ’Optimal Training’ curve, it’s likely that this week resembles an ‘Overreaching’ week. Typically, weeks like this result in a decline in HRV and short-term fatigue. Conversely, if the majority of a week’s daily values are below the ’Optimal Training’ curve, it’s likely that this week is a ‘Restorative’ week; producing an increase in HRV.