Assess your physiological and psychological state to optimise today's training.
HRV reflects autonomic nervous system balance. Low HRV suggests sympathetic (stress) dominance (Plews et al., 2013).
Loss of appetite is a key symptom of Overtraining Syndrome (Module 13).
"Acute:Chronic Workload Ratio" spikes are a leading cause of injury (Gabbett, 2016).