want to ask qns about salt and sweat?

my college sweat a lot when he exercise.
After the sweat dried out , there is a lot of salt reside on his shirt.
especially on black t shirt, noticeable amount of white salt reside can be found.
He say his freind tell him is good..since our modern daily life, we are consuming excess salt intake,is good to force some out, so high blood pressure will stay away from him.

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my brother also sweat a lot when he exercise.
but,no noticeable amount of white salt reside can be found after he dried out.
i ask if his sweat is salty, he taste he tried tasting it, he say he more on the plane side, no salty taste.
i tell him is no good since he is retaining lot of salt in his body,and his daily salt intake is on the high side.
he might get high blood pressure.

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so which is correct?
any brother shed some light?
is sweating the only way our body excrete excess salt in our body?
like that mean those office gals working in aircon office all the way do not sweat, they will have tonn of sodium trap in their body?

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Me too my sweat I think salty because when drip tp eye quite pain in the eye. Just started salty about 6 month ago. Before no such problem sweat salty.
I like to know the answer too.
 
Me too my sweat I think salty because when drip tp eye quite pain in the eye. Just started salty about 6 month ago. Before no such problem sweat salty.
I like to know the answer too.

i supposed excess salt is to be excreted via urine..small amount from pores/
 
what happens if a person got shortage of sodium in their body?
 
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