The resonance frequencies of some human body parts and organs lie between 0 and 80 Hz range (Huang and Suggs, 1961), the most critical range being 0 to 8 Hz (abdominal mass, shoulder girdle 4-8 Hz; heart 4-6 Hz; entrails 3-7 Hz; spine 3-4 Hz; head 20-30 Hz; eye ball 30-80 Hz etc.).