Potassium is one mineral that plays an important role in controlling the amount of fluid in the body. Another is sodium. Too much sodium -- which the body mainly gets from salt -- leads to the body retaining fluid.
Depending on which account you believe, the real McCoy was a boxer, an inventor, a rumrunner or a Scottish clan leader. Here are just a few of the phrase's possible origins: In the late 1800s, American welterweight champion Norman Selby boxed under the name Kid McCoy.. Two stories about Selby give a possible explanation for the phrase. In the first story, Selby was challenged by a drunk in a bar, who questioned whether he was really the legendary fighter he claimed to be.
[1900s+ Army; fr gugu, a term of Filipino origin, perhaps fr Vicol gugurang, ''familiar spirit, personal demon,'' adopted by US armed forces during the Filipino Insurrection of 1899 as a contemptuous term for Filipinos, and spread among US troops to other places of occupation, invasion, etc; probably revived after 1950 by the Korean term kuk, which is a suffix of nationality, as in Chungkuk, ''China,'' etc]