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<blockquote data-quote="TeddyTottie" data-source="post: 2301098" data-attributes="member: 519030"><p>I have been through this myself, having been cycling much more over the last few months. When I started, I did run out of energy (not puff, but muscle energy) pretty easily. I was quite worried that my low-carb life wouldn’t support vigorous exercise, even though I knew that there a substantial number of keto performance athletes.</p><p></p><p>Someone here suggested I read this</p><p></p><p><a href="https://www.amazon.co.uk/gp/product/0983490716/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1" target="_blank">https://www.amazon.co.uk/gp/product/0983490716/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1</a></p><p></p><p>which greatly reassured me. I think my body had not quite achieved the sunlit uplands of fat-burning nirvana and I was still adapting. I’m seem to be there now, as long as I stay hydrated and warm up properly before making a strong physical effort. I usually do my (very noddy) mountain biking in the early morning, before I eat, and I am neither hungry not fuel-depleted whereas my much fitter, much more experienced friend is looking for a snack as we finish.</p><p></p><p>The main thrust of the book is, that an athlete who preloads carbs can only store around 2000 calories of glucose, after which they bonk, or must refuel. The fat-adapted athlete does not need to preload or refuel because even the leanest person has access to around 20000 calories of fat-based fuel. I may have the exact figures wrong, but that’s the general idea as I remember it.<img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite23" alt=":cat:" title="Cat :cat:" loading="lazy" data-shortname=":cat:" /></p></blockquote><p></p>
[QUOTE="TeddyTottie, post: 2301098, member: 519030"] I have been through this myself, having been cycling much more over the last few months. When I started, I did run out of energy (not puff, but muscle energy) pretty easily. I was quite worried that my low-carb life wouldn’t support vigorous exercise, even though I knew that there a substantial number of keto performance athletes. Someone here suggested I read this [URL]https://www.amazon.co.uk/gp/product/0983490716/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1[/URL] which greatly reassured me. I think my body had not quite achieved the sunlit uplands of fat-burning nirvana and I was still adapting. I’m seem to be there now, as long as I stay hydrated and warm up properly before making a strong physical effort. I usually do my (very noddy) mountain biking in the early morning, before I eat, and I am neither hungry not fuel-depleted whereas my much fitter, much more experienced friend is looking for a snack as we finish. The main thrust of the book is, that an athlete who preloads carbs can only store around 2000 calories of glucose, after which they bonk, or must refuel. The fat-adapted athlete does not need to preload or refuel because even the leanest person has access to around 20000 calories of fat-based fuel. I may have the exact figures wrong, but that’s the general idea as I remember it.:cat: [/QUOTE]
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