Hi all, I understand that one of the key to successful weight lifting is to always increase the intensity from workout to workout, let's say by increasing the weight lifted. But in a book that I've read some time ago, it was suggested that from time to time we should also reduce the intensity a little bit, before pushing forward again. So for instance we are increasing the weight from 70% RM, next workout 80%, next 90%, and then we should reduce to say 85% or 80%, before we push again to higher weight. The book said that without this strategy we cannot keep increasing the weight.
You don't necessarily have to use this specific strategy that your book outlined, but I do somewhat agree simply by the fact that you can't go 100% all the time. I don't think that the intensity should be decreased as much, more so you need variety in your training, for instance always doing reps at 80%1rpm, your body will adjust as a certain amount of time.
There are a number of ways to increase intensity, and there are several ways to recover from intense workouts. For instance, the book you have read relies on a cycling protocol to allow for recovery from intense workouts. Other options to recover would be to reduce volume and/or frequency or to take 1-2 weeks (or more) off from training.