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The body can only convert so much fat into energy at a given moment. Usually we have both carbs we've recently eaten to fuel us plus a store of glycogen. On Ket
by Mountain_Skies 7y ago
The body can only convert so much fat into energy at a given moment. Usually we have both carbs we've recently eaten to fuel us plus a store of glycogen. On Keto you should have little to no glycogen and only whatever small number of carbs you've eaten recently. If your energy expenditure exceeds what they body can convert from fat along with whatever it can extract from your limited carbs and whatever glycogen is hanging around, you'll get an energy crash. Keto might be good for ultra endurance events where there is little to no sprinting involved. Just keep a nice steady pace at the level that can be fueled by the body's capacity to convert fat into energy.
- stefan_ 7y agoExcept then you would still eat carbs the night before a race because not having glycogen is just intentionally gimping yourself for no imaginable possible gain. It's not like the mj of glycogen energy is weighing you down. You should absolutely train in a glycogen depleted state just so you will know what it feels like and can deal with it. But it's not how you would ever start a race.
- mdhen 7y agoYeah doing a lot of anaerobic activities when on a zero or Ultra low carb diet will tend to wear you out quicklydue to glycogen depletion.