Q

What is the origin of the '8 glasses a day' water recommendation?

From 5 years of verified research · Vassili Sandqvist
A

The '8 glasses a day' recommendation lacks scientific backing and can be traced to a misinterpretation of a 1945 U.S. Food and Nutrition Board guideline. This guideline suggested that adults need approximately 2.5L (85 fl oz) of water daily, but it also noted that most of this intake comes from food, a crucial detail that is often omitted.

This is one answer. The complete system — the psychology, the biology, and the method — is in the book.

Read The Willpower Lie →
Found an error? Let me know →