1.Ubuzima bumara igihe kirekire, butari munsi yimashini isanzwe ikora imisumari, byibuze imyaka irindwi. Umukandara wera ku giciro gito n'ubuzima burebure ni amezi 5-6 nta gikorwa kitari cyo.
2.Amavuta yo kwisiga, ingingo nkeya zo gusiga, munsi cyane yimashini gakondo nizindi mashini zikora imisumari kumasoko.Biracyafite isuku cyane iyo ikora.
3.Ntugasenye niba udahinduye imiterere yimisumari ishobora gukora amezi 3. Igihe cyo gukubita ni inshuro eshanu kurenza ibikoresho bisanzwe bitewe nukuri ukoresheje imiterere.
4.Umutemeri wumusumari ukora gukata udakoraho; gukoresha gake yimisumari, nta gucamo, nta kwambara neza, nta gufunga. Gukata imisumari, kubumba imisumari, gukubita birashobora gusanwa inshuro nyinshi mugiciro kimwe ugereranije nibikoresho rusange.