i fold over the pages at the start of the chapters, in 50 page increments.
[and if i get to page 50, or 100, or 150 etc and its in the middle of the chapter, i fold over the corner of the very next chapter that follows].
whenever i finish reading a chapter, i skim to the start of the one following it, and fold that page over.
but once i get half way through the book, i go through and fold over the start of every chapter, throughout the second half of the book.
i don’t know why i do this.
i’ve done it for as long as i can remember.