Naturally isotonic, it contains potassium, sodium and calcium. Great for rehydration instead of water, and ideal for use pre or post exercise (and when hung-over!).
'Not all of the brands are pure though so read labels and avoid the ones with added fruit, which ups the (natural) sugar content' says Amelia.
Keeping hydrated can help to reduce cravings for foods and is especially beneficial for skins appearance. 'As coconut water is fat free it is fine to drink if trying to lose weight' she adds.
Try Tiana Organic Coconut Water, £1.76, www.ocado.com