If you’ve not heard of this: Fasted Cardio is when you do cardio first thing in the morning before you put anything in your mouth. Bodybuilders will do this because they say it’ll burn more fat for energy?
Is this true? The science seems reasonable. When you first wake up you have very low blood sugar: the lowest you’ll have all day probably. When you exercise with low blood sugar, the theory is that your body is *forced* to recruit fat for energy because you’ve got no sugars floating about. Your body consumes them during your sleep cycle. Makes sense, right?
Personally I believe that a calorie is largely a calorie and you can burn it at any time of day, and all this may be muscle head superstition.
But also: I 100% do fasted cardio 😂. I don’t care if it’s a placebo or superstition because many bodybuilders swear by it and I’ll do the crazy thing if it *might* get me 2% leaner at the end of the day.
There’s no downside, and anecdotally there’s an upside. Why not squeeze out every possibility? I also just enjoy having done cardio first thing. It makes me feel accomplished and energized in a way, even before the sun rises.