Quote:
Originally Posted by Silock
Mental stress is one of the biggest factors in cortisol production that we know of.
Lactic acid is a GOOD thing, and cardio has little to do with "flushing it out." Lactic acid is what your body uses when it must resort to anaerobic means of energy production. When you reach the limits and your body can't get enough oxygen to muscle cells, the lactic acid combustion takes over (yay fermentation!). The limiting factor in that case is the ability of the cell mitochondria to process the lactic acid. More mitochondria = more lactic acid used for fuel = ability to go longer.
There's no need to "flush it out." It's there for a good reason! It's helpful! It's produced by the body all the time, and is used for either fuel for ATPs or is used in the creation of glycogen. It's always going to be there. People used to think it was responsible for the "burn" or soreness in the muscles, but that's just not the case. You will build up lactic acid over time when exercising at high intensity, but the excess will be removed by the body within an hour, anyway. I suppose you could do some low-intensity cardio cooldown stuff, but that's not been proven to significantly reduce the time it takes to remove the lactic acid.
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Well, the reason Im referring to flushing out the lactic acid buildup is due to it's side effects. It causes acidity in the muscles, and it can also disrupt metabolites in the body. Same type of metabolites that are used in the breakdown of glucose don't perform as well in an acidic environment.