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.
Skiing, recreation, sport, and mode of transportation that involves moving over snow by the use of a pair of long, flat runners called skis, attached or bound to shoes or boots. Competitive skiing is divided into Alpine, Nordic, and freestyle events. Competitions are also held in events such as speed skiing and snowboarding.