5. Cold Water
One of the best things you can do to improve hiccups is to take some cold water and splash it on your face. This triggers a release of adrenaline, which can in turn help you to boost your energy levels and wake up.
Coldwater will also improve your health in a number of other ways. Firstly, cold water is very beneficial for helping to improve blood flow to your face and brain and this can sometimes be the shock and distraction you need to stop hiccups. At the same time, it also just wakes you up and freshens you up. If ever you are feeling overtired or stressed, then splashing your face with cold water can often be the solution that you need.