By not bending at the waist and moving just your head down you can change the distance are looking through are your are looking down though the peep hole making the sight picture a little diffident from your eye to the peep, It don't take much and this is just like moving your peep up or down if your eye is a little farther form your peep are you are looking down through it you have change your sights picture a little and you are going to shoot high. A lots of bowhunter do this and than can't under stand out way they shoot high out of a tree stand. If you shoot to the right by pulling your arm to the right you are pulling the bow string into your chest and arm just by moving your arm you are also changing your angle, presure on you shoulder and the bow and you body is going to react diffident when the bow going off and this is the making for a bad shot. You can pull straight down, but make sure your are bending at your waist to draw your bow and not just looking down. When ever you change something it will changes every thing from your form and even your sights.