Your explanation was it SHAKES, i repeat SHAKES, lactic acid out of the muscles. No it helps increase carnosine to buffer hydrogen ions which are split from lactate a by product of anaerobic energy production. This in turn increases your lactate threshold as your muscles ph level has not gone as acidic which decreases the ability for the muscle fibres to contract. The lactate is then retaken back into the mitochondria to form pyruvate to produce aerobic metabolism after your exercise intensity has significantly decreased. It is also transported in the blood to the heart and liver which both can use it, one for energy production the other for glycogen production. It does not go to your stomach and does not make you want to throw up, another statement you made. The hyrdogen ions are slowly buffered in the blood stream and your cardiopulmonary system does the rest.
That is why what you said is crap and if you don't understand it properly do not go spreading around information about it.