From what I've heard and read anything that has calories will break the fast and alter the circadian rhythm. Only water and black coffee do not.

I am new to this forum. I have been studying intensely and read books by Mark Hyman, Dale Bredesen, Steven Gundry, and Michael Li. A lot of information not all the same. I listen to many podcasts with the same result: many different opinions of everything including intermittent fasting, circadian rh...

I would also like to be included in the study. Kindly let me know.
Michael Stern (Thorlox) 75 yr