Why do i get tired eyes(sleepy) when i read a book?

Your neck might be tilted too far forward decreasing blood flow to your head. Try holding the book higher. I suggest reading at a desk and resting your forearms on table while you hold the book. The farther away you hold your book, the less your head tilts.

You were probably tired and did not realize it until you slowed down and relaxed, which brings me to my theory of why books look the way they do. Picture lying in your cave reading the latest issue of 'Better Hunting and Gathering', you fall asleep and that damned stone tablet smashes your nose again! This prompted the discovery of softer material and a design which allows the scroll, book or magazine to gently drape over the face, protecting the nose.

That is what books do, it is a good sleeping pill if you need it

Reading is a natural sleep aid for most people. It is because you are using eye mucles that dont really get worked much in normal day to day activity and it slows your brain down to try and focus.

u know you have the same exact problem as me i read a book just yesterday and i read the first page and i could barely open my eyes maybe the book is boring and you need to get your eyes checked or maybeyou should go to your docter or an optimist

same thing happens to me. I think it's just eye strain.

when u read you strain your eyes. Especially if you are too close to the book

That is why I read at night in bed. It actually helps me fall asleep.

well you might psychological connect reading with being tired so when you read your body thinks about sleeping.