Sone kee disha uttar disha kee or sir karake nahin sona chaahie. yah koee mithak nahin hai, balki isake peechhe ek vaigyaanik kaaran hai. shareer ek chumbak kee tarah hai, jisamen sir kee taraph dhanaatmak aavesh aur pair kee or rnaatmak aavesh hota hai. isee prakaar uttar disha dhanaatmak tatha dakshin disha rnaatmak aavesh hai. […]