Mubihe byubuzima bwiza bwigihugu, imyitozo nikintu cyo gushishikarizwa. Kugumana ingeso yo gukora siporo birashobora gushimangira umubiri, kunoza ubudahangarwa, kuramba, kongera umubyibuho ukabije, no gukora imirongo myiza yumubiri.

Abantu benshi batakaza ibiro bazahitamo kwiruka, kugenda byihuse, aerobika nindi siporo kugirango batezimbere metabolism yibikorwa kandi biteze igabanuka ryamavuta yumubiri. Nyamara, abantu bamwe baravuze bati: gukurikiza imyitozo mugihe runaka, ariko ingaruka zo kugabanya ibiro ntizigaragara, ndetse no kongera ibiro, kuki ibi? Igihe kingana iki imyitozo ishobora kumara ibinure byumubiri, ikeneye gutsimbarara kurenza igice cyisaha?

Ubushakashatsi bumwe bwerekanye ko mu ntangiriro yimyitozo yo mu kirere, umubiri ugira uruhare runini mu kunywa glycogene mu mitsi, kandi ibinure ni bike cyane.

Imyitozo ngororangingo mu minota irenga 30, kunywa glycogene byatangiye kugabanuka, uruhare rwibinure rutangira kwiyongera, byombi bingana na 50%. Muyandi magambo, kora imyitozo itarenze iminota 30, gutwika amavuta ntabwo bigaragara. Niba ushaka kugera ku ngaruka zigaragara zo gutwika amavuta, igihe cyo gukora imyitozo ni cyiza kuruta iminota 30.

Imyitozo yimbaraga zo kurya ibinure iracyari mike, guswera, gukurura, gukanda intebe, gukurura cyane nandi mahugurwa yimbaraga ahanini ni imyitozo yimitsi (gukoresha glycogene ishingiye) imyitozo ya anaerobic, irashobora kunoza imitsi, kugirango umubiri ukomeze a imbaraga zifatizo zifatika, bityo byongera ikoreshwa rya calorie.

Mugihe cyo kwinezeza, abantu bakora imyitozo yingufu gusa kandi badakora imyitozo yindege bazabona ko ibiro biziyongera mugihe gito, aribyo kuko imitsi yiyongereye.

Abantu bubahiriza imyitozo yingufu igihe kirekire, hamwe nogutezimbere metabolisme yibanze, ibinure nabyo bizakoreshwa, kandi iterambere ryubaka imitsi no kugabanya ibinure bizagenda neza.

 Nubwo, nubwo bivugwa ko imyitozo irenze igice cyisaha izaba nziza yo gutwika amavuta, ntibisobanura ko imyitozo muminota itarenze 30 itazagira ingaruka zo kugabanya ibiro.

Kuberako ugereranije nabantu bicaye, niyo wakora imyitozo muminota 10, iminota 20 yo gukoresha ubushyuhe izaba irenze abantu bicaye, nubwo igihe cyimyitozo ngufi ari gito, gutwika amavuta ntabwo bigaragara, ariko mugihe kirekire, hamwe no gucunga imirire , umubiri uzahinduka buhoro buhoro.

Niba ushaka kunoza imikorere yo gutwika amavuta ukoresheje imyitozo no gukora umubiri unanutse, usibye kwemeza uburebure bwimyitozo ngororamubiri, urashobora kandi kongera imyitozo yimbaraga. Imbaraga zamahugurwa zirashobora kubaka imitsi, kuzamura agaciro ka metabolike yibanze, kwirinda imyitozo ya aerobic ikabije kubura imitsi.

Ku bijyanye no kwinezeza, banza ukore iminota 30 yimyitozo yingufu zo kurya glycogene, hanyuma utegure imyitozo yindege (iminota 30-40) muriki gihe, ishobora kwemerera umubiri kwinjira muburyo bwamavuta yaka vuba, kandi umubiri urashobora komeza metabolisme ikomeye nyuma yimyitozo, komeza ukoreshe karori, kandi ugabanye ibiro.