This is still basically an exercise. Which I assume, is ment to be beneficial to your readingskill in the long run. As in, you shouldnt really use it, to read a book you were trying to finish or homework you were trying to understand. Mybe just put some short story in there and try that. Cause yeah, it kills the enjoyement of reading and I dont know about the rest of you internet geniuses, but in my case if I read some stuff that has a lot of technical info in it, from which I have to start making some logical connection, my eyes and brain have to go back and forth between the lines in the page for me to fully grasp that info and create that connection.