It's a rare individual that needs to increase his sodium intake -- after all, most Americans consume way more than the 1,500- to 2,300-milligram maximum a day. However, certain people -- such as athletes who sweat a lot -- might experience a condition known as hyponatremia, or low levels of sodium in the blood.
Skiing has a history of almost five millennia. Although modern skiing has evolved from beginnings in Scandinavia, it may have been practiced as early as 600 BC in what is now China. The word ski is one of a handful of words Norway has exported to the international community.
Luge is the French word for âsledgeâ and, like bobsleigh, it was developed as a sport in Switzerland. Its roots go back to the 16th century, but it was not until 300 years later that the first luge tracks were built by Swiss hotel owners to cater for thrill-seeking tourists.