Theoretical knowledge about the “vital energy” inherited from our ancestors for our organs and structures, theoretical knowledge about its conservation and restoration through physical exercise.
References
Козлов В.И. Здорове закладывается в детстве. – М. : Знание, 1988. – 64 с. –(В помощ лектору.Б-ка”Здаровый образ жизниы”).