[bfieidhbrjr]

When you water fast you excrete salt with the water you're drinking. Beginners tend to drink far too much water to mentally replace the food, and so they lose a lot of salt. Gatorade when it was invented was an electrolyte replacement. Now it has a lot more sugar too. It was probably for the salt.

My longest fast was two weeks, AMA. :-)

[TheJurgen]

For clarification, I take a daily electrolyte tablet with vit. C, magnesium, calcium, potassium and sodium when I fast. Generally, you want to take in less than 40 calories to stay in a proper water fast and I don’t think Gatorade fits the bill. Unless you’re doing a Fast Mimicking Diet where you’re allowed to eat up to 700 calories (I think). My longest was 5-day water fast (a few times). I found that Day 5 is better than Day 4. What days do you think are the worst in a 2-week fast?

[bfieidhbrjr]

The transition to ketosis is usually the hardest, which for most people is around day 3.

If you eat keto it isn't a problem.