i think if you jz drink more water during that moment, small portion, little by little...公仔箱論壇0 w/ _# @% L2 V' t9 |: A4 z8 d
or you can try to hold your breath and try to inflate your abdomen( make your stomach bigger with mouth closed)7 d8 T! p$ A* P' h" A4 A6 I
i tried all above method and they helped....