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.
At a period of about 90 minutes of moderate intensity exercise, I want to be clear, at about or after 90 minutes of moderate intensity exercise. There's a switchover point whereby if you ate before the exercise, you will reduce, excuse me, you will burn far less fat from the 90 minute point onward than you would if you had gone into the training fasted.
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At the 90 minute point, 90 minutes of exercise you will start to burn more fat than you would had you eaten.
at some point there was a lot of discussion about training fasted burns more body fat uh I think now most people accept that that's not the case that perhaps the percentage of fat as fuel is increased when one trains fasted but that overall in terms of loss of body fat it doesn't matter if you train fasted or you train fed correct
They will burn more fat during the training bout.
One of the groups trains in a genuinely post-absorptive fasted state, eight to 10 hours-ish, eating nothing. They will burn more fat during the training bout. - Body fat? - Yes.
And so it all comes out even by the end of the day.
One of the groups trains in a genuinely post absorptive, fasted state, eight to 10 hours-ish eating nothing. They will burn more fat during the training about. Body fat? Yes, they will burn more body fat. They will burn more intramuscular fat. They will just, their net fat oxidation will be higher than the group that has a breakfast.
And you do burn a little bit more fat if you train fasted. I mean that's known.
Time-restricted eating produces fat loss independent of total calories.
A 72-hour fast measurably improves autophagy markers in healthy adults.
One-meal-a-day (OMAD) eating patterns increase all-cause mortality in long-running cohort data.
Eating the largest meal before 3pm improves 24-hour glucose vs. an evening-heavy schedule, calorie-matched.