I always open books this way.
Once I was in a hurry, I forgot to do it, and the book exploded in thousand pieces.
My left hand was burnt and I had to go to hospital.
I was so ashamed when I had to explain that I didn't open my book properly to the doctor.
He was like "oh, I'm so cool I graduated at Harvard, etc.", making fun of me like I was an illiterate.
I didn't tell anyone until now.