Can I clean myself ot with salt water?

[JonnyBoy12]

A close friend of mine has told me about a treatment to clean your system out drinking only salt water over a course of 5 days. I would like to get a second opinion on this matter from you ABers. Can you tell me just how to do this and what type of salt would I need?

I have been told to put 2 dessertspoons of water in 2 and a half litres of hot water and then drink that each day for 5 days in a row. Is this the correct method and have any of you ever done this?

Many thanks for your kind answers past and present.