Issue 01: Two sugars beat one, even on an empty tank
from Substrate Digest
A double blind crossover trial found a 2:1 glucose to fructose blend oxidized more of the carbohydrate athletes actually swallowed, whether they were fully fueled or two days into an energy deficit. Elsewhere this week, carb loading research turned out to be mostly unblinded, and at the IRONMAN Worlds it was logistics and nerves, not knowledge, that broke women's fueling plans. Read the full issue on substratedigest.com, with every study, its source link and the "what this does not show" notes. More issues at substratedigest.com.
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This episode is 14 minutes long.
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This episode was published on July 29, 2026.
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