Kowa na cewa casein ita ce protein da za a ci kafin kwanciya, amma wani sabon bincike na ƙananan ƙungiya ya nuna wani abu daban. Bayan horon ƙarfi, gram 40 na whey da aka sha minti 30 kafin kwanciya ya rage lokacin faduwa barci zuwa mintuna 9 kacal, yayinda carbohydrate ya kai mintuna 19, kuma ya rage ciwon tsoka na gobe. Casein ba ta bambanta da gwajin carbohydrate ba. An yi wannan bincike ne da mutane tara kacal, don haka ba za a iya yanke hukunci mai ƙarfi ba.
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