i think if you jz drink more water during that moment, small portion, little by little...os.tvboxnow.com0 z' O; @& O# n# m
or you can try to hold your breath and try to inflate your abdomen( make your stomach bigger with mouth closed) 9 R5 H) m" W* I5 ]4 N+ q公仔箱論壇i tried all above method and they helped....