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by ddeck
2457 days ago
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That's true, but there is a lot of water in the body aside from the blood. While most people will feel physical effects after losing 5% of their body weight in water, many can lose up to 8-10% without significant adverse physical or mental impact. Loss over 10% is considered serious dehydration. World champion marathon runner Haile Gebrselassie famously won the Dubai marathon in 2005 with a 10% body weight loss during the race: https://www.ncbi.nlm.nih.gov/pubmed/22450589 |
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