Cna and lvn question?

well thinking of going to cna since i know i have to take that before going to lvn field, do lvn also bathe people? would female cna have to bathe males? is there usually 2 ppl one watching so nothing will happen? how do females do it right if they hve to wash a male? if i become a cna i just don't want anything weird to happen i don't know what really happpens.