Obstacles get in our way, however. Well, these are things that impede us from reading faster. Regressions are going back over words. You can call it back-skipping if you want. You go back over words you previously read.
People do it for two reasons.
Initially we read it to clarify the meaning of what we're reading. We want to be sure of the words we read as we go along. Well, this not only slows you down, it causes you comprehension problems. But this takes time to sort out. And it's confusing.