Does salt make you sweat more??!

I'm asking this because the other day my mom called me & told me that when she made her coffee and took a drink it was disgusting (after she gulped down half of it) and she tasted the sugar and it mostly salt!. Well she knew her daughter in law (my brother's wife) had done it!. She had her son ask her why she did it and her excuse was "It was a natural remedy for herself to make her sweat more so she wouldn't pee so much" the first thing I asked was if that were true why didn't she just do it in a bowl for herself bc she knows thats where my mom gets the sugar from!.!. So do you think this excuse was true or do you think that my sister in law did it purposely to get back at my mom (my mom woke up in the middle ofthe night and my sister in law was on her laptop w/out asking and my mom made her get off of it!.!.!. the following morning was when the sugarsalt happened)!. Also can too much salt at one time hurt you or make you sick!?!? Thanks!Www@Answer-Health@Com

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