National Academy of Sports Medicine (NASM) Group Fitness Instructor Practice Exam

Losing color in the face is indeed a clear sign that a participant is overexerting themselves during a workout. This physiological response can indicate a reduced blood flow to the skin as the body directs blood to vital organs and muscles during intense activity. A participant’s complexion may change when they are struggling to maintain adequate oxygen levels or are becoming fatigued, which can signal the need for a break or a reduction in intensity. Breathlessness and fatigue are also indicators of overexertion but are more general responses that can occur even in a normal workout for some participants. Increased muscle endurance is a positive adaptation to training and signifies improvement rather than overexertion, while a consistent focus on form indicates that the participant is engaged and likely performing correctly, which contributes to safety and efficacy in their workout.