Stand with your feet wider than hip width, holding a dumbbell directly overhead in your right arm with your palm of your left hand resting on your inside of your left thigh. With a slight bend in your knee, slowly hinge your right hip back at a 45 degree angle. Whilst you do so, maintain eye contract with the dumbbell overhead and slowly slide your left hand down the inside of your leg towards your ankle. When your hips have hinged as much as possible, proceed to gradually reverse the movement. Drive your hips forward, squeezing your glutes and hamstrings as you do so and exhaling. All the while maintaining eye contract with the dumbbell overhead. Repeat for the required number of reps (or time) and then alternate to the other side.