The Fatigue Protocol has been developed to assess the perceived intensity of exhaustion after physical, emotional or cognitive load sessions, or relaxation. In the Fatigue Protocol, the perceived intensity of exhaustion and strain is recorded on the day of the session and over a period of three days after the session. The rating is made on a scale from 0 (“no exhaustion/strain”) to 4 (“very severe exhaustion/strain”). The Fatigue Protocol differentiates between emotional, cognitive, and physical strain and exhaustion.