When you draw your bow, the draw weight continues to increase until the let-off point is reached, then declines into the valley. Once you reach the bottom of the valley (least amount of holding weight) the weight will start to climb back up as you draw past it. Depending on your cams, this valley can be broad and mushy feeling, or very narrow with a solid " wall" at the end of it. Drawing into the wall just a tad is not a bad thing, but you don' t need or want to overdo it.