i think if you jz drink more water during that moment, small portion, little by little...公仔箱論壇3 c! e5 j9 f( z% Z6 @8 J
or you can try to hold your breath and try to inflate your abdomen( make your stomach bigger with mouth closed) 7 O4 t1 D- Q0 @, s# }0 c# F" ~i tried all above method and they helped....