This hydrogen must be disposed of by the alcohol dehydrogenase in the liver.
Liver protein is broken to combine with the hydrogen to make fat.
This is the system that detoxifies drugs. If the system is trying to detoxify both drugs and alcohol at the same time it can do neither effectly. This conflict can cause a person to suffer a drug overdose even though he is taking no more drugs than he usually does. The rate at which one can detoxify alcohol is determined by the amount of alcohol dehydrogenase contained in the liver. You can not speed up the detoxification by exercise, caffeine, or cold showers.