The single-leg barbell good morning builds balance in the legs while also developing strength through the core and lower body.
Place a barbell across your upper back and pull the bar down while squeezing your shoulder blades together for stability. Stand on one leg with your knee slightly bent. Push your chest out, your hips back and lean forward.
Lower your torso towards the ground as your rear leg trails behind you to help with balance. Only go as low as you can without your lower back rounding.
Pause, and then reverse the movement, returning to the starting position. Squeeze your butt at the top.
Place the bar on your upper back rather than straight onto your neck for more comfortable positioning.
Keep your back flat during the exercise to avoid injury.
Avoid moving by bending at the knee. Instead, focus on hinging at the hip and shifting your weight backwards during the movement.