Kodi ubwino wa nsalu ya ulusi wa nsungwi ndi wotani? Choyamba, nsungwi ndi yotsutsana ndi mabakiteriya, kotero imasunga malaya anu opanda mpweya komanso kumva fungo labwino. Kachiwiri, chifukwa nsungwi imatha kukoka chinyezi pakhungu kuti chisaume, kotero imakusungani wouma komanso woyamwa thukuta kwambiri. Kachitatu, imateteza kwambiri kutentha, kotero mumamva kuzizira nthawi yachilimwe komanso kutentha nthawi yozizira mukamavala zovala za nsungwi. Chachinayi, momwe nsalu ya nsungwi imagwirira ntchito ndi yofewa komanso yosalala. Ndipo nsaluyo imapuma bwino. Chachisanu, nsungwi imaletsa kuwala kwa dzuwa, kotero imateteza ku khansa ya pakhungu. Chachisanu ndi chimodzi, si ulusi wopangidwa, ndi wochokera ku chomera cha nsungwi, kotero imakhala imodzi mwa nsalu zabwino kwambiri padziko lonse lapansi.