si lamid ah kaffayiin [ [20] ]. Qaar ka mid ah dadka wax ka qoray arrintan ayaa sheegay in sigaarku siyaadiyo xoog saaridda maskaxda (mental concentration ). Dadka sigaarka cabba waxa ay sheegaan inay ku raaxaystaan cabbiddiisa, tasoo qayb ka ah sababaha inaanay joojin karin xataa haddii ay ogyihiin halista caafimaad