From the beginning of labour, be sure to drink plenty. At first drink water, juice or isotonic drinks. Keep hydrated as labour is like running a marathon!! As you progress into active/established labour, you must continue to drink! Water is probably best as sometimes you may feel a little nauseous and if you are in hospital they may only allow water. Have a bottle with a flip top in your labour bag and take a drink after every contraction. A job for your birth partner!! it is so important not to become dehydrated as you will feel terrible but your baby will also be feeling the negative effects. So stock up on the water!