STRAIGHT / STIFF LEG DEADLIFTS
How it's done?
With barbell
Go stand with feet flat beneath the bar and squat down. Take a grasp on the bar with hands about a shoulder width of the bar, or a little wider. You can do normal or a mixed hand grip. Executing happens by lifting the bar by extending your hips and knees to full extension. Pull your shoulders back at the top of the lift. Now you are in the standing position. Now keep your knees straight and lower the bar toward the top of your feet by bending your hips until your hamstrings are tight or just before your lower back would start to bend. Lift the bar by extending your hips until you are standing straight, pull shoulders slightly back at the top. This is one repetition. Remember to keep your back straight at all times, you may slightly bend your knees, not much though. Different people have different flexibility and in this butt exercise you should really feel around where is your limit before your back starts to bend. Some people have no problems to go all the way until the weights almost touch the ground, some people can go just to their bar at knee level.
With dumbbells
Straight leg deadlift with dumbbells is basically the same movement as it is with barbell.
What it targets
Main target of this butt exercise is the hamstring and butt muscles.
Tips for shaping butt.
Add weight when it starts to feel too easy. Don't ever add too much weight, you should at all times control your movement and be able to keep your back straight. The straighter you can keep your knees when executing this butt exercise, more it works around your glutes and hamstrings.