Forget buns of steel, get a derriere that will not only fill out a pair of jeans, but will also help you power through your workouts. Do each workout for 2 sets minimum.
Single leg hip raise
Lie on your back with knees bent. Straighten one leg so it is straight in the air, then push through your opposite foot’s heel and lift your body in the air while keeping your shoulders on the ground. Squeeze your glute and lower back down slowly and return to the top without touching the ground.
Do 5 on the first side then repeat with the other side.
Swiss ball curl
Laying on your back, place a swiss ball under your calves. Keeping your shoulders on the ground, squeeze your glutes and brace your core to lift your body off the floor. Bend your knees to bring the ball close to your body, then while staying lifted off the floor, return to the beginning. Without lowering back to the ground, roll the ball back towards your body.
Repeat 10 times.
Hydrants
Get onto all fours on the floor with knees hip-width apart and wrists under shoulders. Keep your knee bent at 90 degrees, then lift it straight up to the side to about hip height, then extend your leg out to the side. Pause, bend your knee again and return to the beginning and repeat without losing the contraction in the glute.
Repeat 8 times then switch legs.
Step ups
Hold a dumbbell in each hand. Starting with one foot, place it on the top of a bench or block, then step up, keeping the other foot off, and all your weight on the first foot.
Step the second foot back to the floor and repeat 5 times before switching to the other foot.
Kettlebell swing
Grab a kettlebell and hold it in front of you with both hands. Stand with your legs shoulder width apart, then bend at your hips and knees and lower your torso as you swing the kettlebell between your legs. Keeping your arms straight, thrust your hips forward, straightening your knees and swing the kettlebell to chest height as you stand up.
Repeat 10 times.