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It pretty much has to be. 1kg would be 1L of water, which is not that much to lose over 5 hours. But 1kg of fat is 7700 kcal, which would be a massive amount o
by breischl 5y ago
It pretty much has to be. 1kg would be 1L of water, which is not that much to lose over 5 hours.
But 1kg of fat is 7700 kcal, which would be a massive amount of energy to expend in 5 hours. Unless your "walks" involve running uphill with a 25kg pack or something like that. :)
- PeterisP 5y agoShort-term energy consumption on a 5 hour hike would be from stored glucose, fat breakdown IMHO would happen slower. A 20km hike can consume 1000-2000kcal depending on how hard it is (climb, terrain, weight of hiker, weight of pack matter) so that would be 0.25-0.5kg of carbs - so potentially that loss could be 50/50 carbs and water. But hydration definitely is a big aspect of mass simply because of how much you add and lose. I once did a ~90km hike in 24 hours or so, and I believe I drank something like 15+ litres of liquids during that.
- ashtonkem 5y agoDepends on what you’ve eaten recently. It’s pretty easy to burn fat on a hike if you go while fasting.