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.
Important Dates. 1  6000 - 12000 BC : Estimated date of a drawing with a reindeer and man on skis. 2  1835 : Norwegian Sondre Norheim lays the foundations for the first ski competitions. 3  1922 : Sir Arnold Lunn organizes the first Slalom Cup. 4  1924 : International Ski Federation created. 1924 : The combined event of downhill and slalom is launched at Murren and Grindelwald, in Switzerland. 1931 : First world championships held at Murren, Switzerland. 1936 : Alpine skiing becomes an Olympic event, although medals are awarded only in the combined discipline.