Biofeedback shows how the human body responds to stress, anxiety, or joy through changes in heart rate, breathing, muscle tension, fingertip temperature, or skin conductance. A seasoned biofeedback specialist illustrates its application for maintaining performance in a practical manner using case studies: in sports, under high stress, and for lifestyle-related diseases such as hypertension, muscle tension, panic, and migraines, as well as for women-specific issues like menopause, childbirth, and pelvic floor training. Therapists, trainers, doctors, and interested individuals benefit from her extensive experience.