Kedu ụdị akwa akwa dị mma maka ụmụaka

Nhọrọ ụmụaka matraasi na-emetụta uto na mmepe nke ụmụaka, ụmụaka n'ozuzu na-ahọrọ matraasi na-achọrọ ịgbaso ụkpụrụ, ya bụ, nro siri ike na-agafeghị oke. Ọtụtụ echiche ochie bụ matraasi siri ike dịka o kwere mee. N'ezie, ihe ndina bụ ihe fọdụrụ nke ahụ na uche, ṅaa ntị na nkasi obi, ya mere, mgbe ị na-ahọrọ matraasi ụmụaka, a ghaghị inwe ihe dị nro! Kedu ihe matraasi dị mma maka ụmụaka? N'okpuru onye na-emepụta matraasi na-ewebata gị: akwa akwa, ụmụaka pụrụ iche, jikọtara ya na ọkpụkpụ ọkpụkpụ ụmụaka, enwere ọtụtụ uru na-eto eto ụmụaka. Nke abụọ, izugbe ụmụaka matraasi dabeere na e ji mara nke ọkpụkpụ mmepe imewe na mmepụta, ezubere iche, nwere ike ikwe ka ozu nwa na a ezi uche njide, gbochie gbagọrọ agbagọ spinal nrụrụ nke matraasi. Ụmụ atọ, ezigbo mattes bụ matraasi agba aja aja, nkwụ nkwụ n'ozuzu ezinụlọ nwere ' soft hard hard moderate, elastic moderate' nke abụọ bụ isi njirimara. Na ihe nkwụ eke eke, ya bụ akwụkwọ ndụ akwụkwọ ndụ akwụkwọ ndụ, anaghị ebute ahụike ụmụaka. Anọ, njupụta elu matraasi bụ ihe kwesịrị ekwesị maka ụmụaka, n'ihi na nke elu njupụta matraasi hardness kwesịrị ekwesị maka ọkpụkpụ ọkpụkpụ ụmụaka, matraasi ogbi mmetụta dị nnọọ mma n'otu oge ahụ, nwere ike ibelata nwa na mgbede, melite ihi ụra àgwà ụmụaka. Matraasi dị ezigbo mkpa ịhọrọ kwesịrị ekwesị maka ụmụaka na-ehi ụra, ma enwere ọtụtụ akwa akwa na-erughị eru. Olileanya nke akọwara n'elu ga-enyere gị aka