Salt is very useful, although only a few of grains salty taste. If your foot tired after using high heels along day and tired after meet your client, there is special tricks to omit your tired.
Prepare a washbasin or some container and fill a half of washbasin with warm water.
Fill 1-2 spoon of salt into washbasin and stir it.
Dip your foot and let it until 10-15 minutes. Your foot will relax and comfort. Additionally salt also useful to kill poison at skin. That way is very effective for career woman and also pregnant woman.
I know this from : kompas.com