The recommendation for salt intake has gone down from 6g per day for adults. It is now thought that in order to reduce the risk of high blood pressure and heart disease, adults should consume less than 5 grams of salt (2,000mg of sodium), and at least 3,510 mg of potassium per day.
If you are perspiring (sweating) when exercising, then you may wish to consume an electrolyte replenishment supplement such as High 5 Zero tabs dissolved in approx 500-700ml of water.
World Health Organisation, (2013). WHO issues new guidance on dietary salt and potassium. Retrieved 23rd August, 2013, from http://www.who.int/mediacentre/news/notes/2013/salt_potassium_20130131/en/