I just use SOLE. Take a 32 oz. Mason Jar with a Plastic Lid and dump in 1/3 Cup Himalayan Pink Salt or Celtic Sea Salt... (Coarse Grind, not Fine)... Fill it with Purified Water, leave an inch or so at the top. Cap it and let it sit overnight. Upon waking, if all the Salt is dissolved, you need to add more. Do so and wait until the next day.
When there is Salt Crystals at the bottom, it means the Water is fully saturated. Take a Tsp of the SOLE and put it in a 16-20 ounce cup of Purified Water, depending on your taste. Down it and that's that... It's supposed to be your Daily requirement for Sodium, and the Himalayan Salt adds 80 plus more nutrients, everything known to Man.
Now... That's for regular people. I don't have an answer on whether Athletes or Gym Rats etc. need more servings.
What I do know is after my Tsp in the morning, I don't crave anything that has Salt.
I can't believe someone can sell packets of Table Salt!