PURPOSE: To enable the elimination stress by a method wherein a pyramid- shaped body is formed with a material such as gold, copper or brass and an oscillator is arranged at a position whose height is at a specified ratio to the stature of a human body from the lower end of the body to generate a sound with a specified frequency for creating a condition which allows the rapid generation of an α wave for yielding relaxing effect intentionally.

CONSTITUTION: The pyramid-shaped body is made up of pipes 1 and 2 comprising gold, copper or brass or a material and a composite material same in nature as the metal. Then, an oscillator 4 for generating a sound of a frequency of 4-12Hz is arranged at a position whose height is at a ratio of 7:3 from the lower end of the pyramid-shaped body. A testee M enters a psycho-physical refreshing apparatus A and after both ears thereof are positioned right near the oscillator 4 in an relaxed attitude on a reclining bed R, the oscillator 4 is actuated with a switch 4a. As a result, the sound of the frequency of 4-12Hz causes a mental concentration effect inductive by the aura, thereby generating an α wave indicating the state of relaxing rapidly in brain waves.