8. Dumbbell Pistol Squat: This exercise isn’t for the faint of heart (so beginners, try it sans dumbbells first). Stand with feet hip-width apart holding a dumbbell sideways in both hands. Extend the left leg out in front of you and squat down on the right leg, moving the dumbbell straight out. Go all the way down (and we mean all the way down!) until your butt touches your ankle. Return to start position and repeat for reps on both sides.
9. Dumbbell Bulgarian Split Squat: Squat so much you nearly split your pants. Hold a dumbbell in each hand. Prop your left foot onto a bench and plant your right foot on the floor into a wide split stance. Lunge straight down, keeping your front leg linear and your spine rigid. Come down until your knee hovers above the floor, and then push back up to starting position and repeat for reps on both sides.