cardio on empty stomach

[dedic8ed1]

I actually just learned that in my nutrition class. For the first 20 minutes of activity, the body use glycogen in the liver and the muscles for energy. When the body's glycogen runs out, the second option becomes for the body to break down amino acid into glycogen. However, after 20 minutes, and if the activity continued at a low-moderate pace (60-75% of MHR) then the body will use stored fat for energy.

I think it makes perfect sense to take a little protein before cardio, since that's what's gonna be used in the first 20 minutes anyways.

Also, I know I just basically repeated what Phate said. Whatever.

Very informative description 48 and Phate I'm impressed.I retract my previous statement.But I'm still not throwing money away on supps.What I'm doing works for me.But what about the insulin spike from the whey?I'm guessing the aminos need to digest quickly to be effective asap.

[Phate]

Very informative description 48 and Phate I'm impressed.I retract my previous statement.But I'm still not throwing money away on supps.What I'm doing works for me.But what about the insulin spike from the whey?I'm guessing the aminos need to digest quickly to be effective asap.

the whey that i used to use had only 1g of carb per serving, so not much of an insulin spike at all

BCAA's are catabolized in the skeletal muscle of the body. ( Therefore bypass the liver). Skeletal muscle contains enzymes that Break down the BCAA's & utilize there energy.

Complete oxidation of Valine yeilds succinyl CoA. Isoleucine = succinyl CoA & acetyl CoA, Leucine = acetyl CoA & acetoacetate

Leucine is the only amino acid completely oxidized in skeletal muscle for energy. (ketogenic)

In other words BCAA's by pass the kidney are are used directly within the muscles for energy. So sipping on BCAA's before ,during & after training will keep a steady supply in the blood stream & "trick" your body into not Catabolizing muscle tissue to have BCAA's in the blood stream. (ie: anti-catabolic in nature)