The evidence is convergent. Multiple independent sources reach the same conclusion, the underlying mechanism is well-characterized, and even the field's most cautious voices treat it as worth doing.
Carbohydrate, on the other hand, is going to be stored locally in the exercising muscle cell, and specifically in the cytoplasm. - As glycogen. - As glycogen in the store there. So what's going to happen initially, your initial demands for exercise, or for fuel, are going to come from the glycogen stored within the muscle fiber itself. It's just going to break right there, and you're going to be off the races.
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so there's two phases of glycolysis now glycolysis itself means glucose burning all right so just means we're using carbohydrate as a fuel source so initially when we start off this Cascade um which is going to take us again for a couple of minutes um carbohydrate utilization comes first from the exercising muscle
We've seen increasing muscle glycogen content. So you store more fuel on board that you can then break down.