? about doing cardio first thing in the morning.

[cbs]

Dumb question. When you do cardio in the morning first thing, what calories are you burning? I mean, for example, if I burn 400 calories on a treadmill first thing in the morning, what am I burning? How do take this away from the total calories I will be consuming throughout the day?

 

[ladymacbeth]

My understanding is: you're body has just gone through a fast, you haven't eaten for 8 hours, so there's nothing for your body to "burn" then what's already in there (not food). When you do it later in the day, you use the food calories (mostly from carbs, which is why high protein/low carb diets work) that you've eaten, not any fuel from your body.

Also, if you are getting numbers from the treadmill like "400", not anywhere else, you might want to watch out, because gym machines lie like sailors.

Hope this helps!

 

[FitnessFrk]

energy will come from muscle glycogen (until it is depleted if the cardio session is long), fatty acids stored in adipose tissue and some substrate from stored protein (LBM) mainly the aminos L-Leucine, L-Isoluecine and L-Valine.

 

[ladymacbeth]

energy will come from muscle glycogen (until it is depleted if the cardio session is long), fatty acids stored in adipose tissue and some substrate from stored protein (LBM) mainly the aminos L-Leucine, L-Isoluecine and L-Valine.

what he said.