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• Issue 03 · 10 August 2026

  Drink up, or your fuel stops working

  Nine trained cyclists who let themselves get 2.8% of body mass down burned about 16% less of the glucose they drank, with no warning sign from the stomach at all. Also this week: a reported carbohydrate gap in female athletes, a Science review on sugars and the human brain, a plant based performance null, and a quiet week for gut science with one probiotic trial to show for it.

  12 studies · with audio

• Issue 02 · 3 August 2026

  The best fiber is the one you keep taking

  A six week randomized trial found people stuck with a daily inulin dose about six times better than with a supported exercise programme, a reminder that adherence, not potency, is where most gut protocols live or die. Elsewhere, a 200,000 adult cohort analysis reported that diet quality, not processing level, predicted disease risk, and a probiotic blend held the gut barrier roughly steady through a competitive weight cut.

  11 studies

• Issue 01 · 29 July 2026

  Two sugars beat one, even on an empty tank

  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.

  8 studies