For people that need a lot of nervous strength: intellectuals, executives, researchers, managers. For people directly in touch with other people, for ex. because working in a shopping center, in administrative offices. For people having an intense working rhythm or that work in too noisy places. Advised for people with weak nerves, suffering from depression or on the contrary from hypertension.
For people that need a lot of nervous strength: intellectuals, executives, researchers,...
For people that need a lot of nervous strength: intellectuals, executives, researchers, managers. For people directly in touch with other people, for ex. because working in a...