Imikhiqizo ephelele yezithelo ezinamathini ibanda, futhi lapho idliwa, abantu bayozishisa ukuze bathole imiphumela yokudla kangcono. Kodwa-ke, ukwelashwa okungafanele kokushisa kungaholela ezinguquko ekunambithekweni kwemikhiqizo enamathini. Ngakho-ke, kuyadingeka ukuba ukwazi ulwazi oluthile lokushisa okunamathini lapho udla.