Monga ziweto zina zilizonse, nkhuku zimafunika kusamalidwa ndi kusamalidwa ndi mwiniwake. Makamaka amavomereza amva kusowa kwa chakudya. Inde, m'nyengo ya chilimwe, mbalamezi zimatha kudzipatsanso chakudya, ngati zili ndi malo okwanira. Komabe, sangathe kuyenda mumsewu kwa chaka chathunthu ndikudyetsa tizilombo m'mlengalenga athu, kotero tiyesetse kudziwa momwe mbalamezi ziyenera kudyetsedwa chaka chonse.
Gulu Kumwa
DzuƔa likasungunuka chisanu chozizira, birch zimayamba kuwuka kuchokera ku hibernation. Kupyolera pa mitengo ikuluikulu mpaka kuphulika masamba ndi nthambi zing'onozing'ono zimayambitsa birch kuyamwa kapena, monga imatchedwanso, - kuyamwa. Lili ndi mchere wochuluka, mavitamini ndi acids, zomwe ndi zofunika kuti birch ikulire komanso maluwa.