Sina Holzerland, M.Sc., is a clinical psychologist and holistic coach who blends science and spirituality through sound and hypnotherapy. Her CrystalTones® sound bowls, tuned to 432, 440, or 528 Hz, are designed to invite deep relaxation, soothe the nervous system, and support the body’s natural balance. Combined with hypnotherapeutic techniques, they encourage mental clarity, emotional resilience, and a profound sense of inner calm. With experience teaching in Paris, Hamburg, and Bali, Sina offers private sessions, workshops, and corporate events, supporting clients to reconnect with their inner resources, deepen intuition, and embody intentional, balanced living. A dedicated journey for mind, body, and soul.