Eating to win: activity, diet and weight control by The Open University

Eating to win: activity, diet and weight control by The Open University

Author:The Open University
Language: eng
Format: epub
Publisher: The Open University
Published: 2018-03-01T00:00:00+00:00


In this section you will consider the importance of hydration as well as the effects of dehydration.

6.1 Water intake

Water plays a key role in sustaining life and in the effective performance of your mind and body. The adult male and female body consists of around 60 and 50 per cent water, respectively. Approximately two litres of water are lost from the body every day, but this will vary depending on factors such as activity level and environmental conditions. General hydration guidelines suggest that men should consume two litres (about ten 200 ml glasses) of fluid per day and women should consume 1.6 litres (about eight 200 ml glasses) of fluid per day (British Nutrition Foundation, 2017). An active person in a hot climate may need to consume between five and ten litres a day (McArdle et al., 2012). Figure 7 shows the ways in which the body gains and loses water. You can also scroll over the parts of the body on the diagram to view some of the effects of dehydration (when water loss exceeds intake) in different parts of the body.

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