Kukoka kumbuyo ndi masewera olimbitsa thupi omwe amaphunzitsa ma lats. Kusunthaku kumachitika munthu atakhala pansi ndipo kumafuna thandizo la makina, nthawi zambiri kumakhala ndi discus, pulley, chingwe, ndi chogwirira. Kugwirana chanza kwakukulu, maphunzirowa adzayang'ana kwambiri ma lats; mosiyana, kugwirana kwambiri, maphunzirowa adzayang'ana kwambiri ma biceps. Anthu ena amazolowera kuyika manja awo kumbuyo kwa khosi lawo akakoka pansi, koma kafukufuku wambiri wasonyeza kuti izi zidzabweretsa kupanikizika kosafunikira pa cervical vertebral disc, zomwe zingayambitse kuvulala kwa rotator cuff pazochitika zazikulu. Kaimidwe koyenera ndikukoka manja pachifuwa.