With dumbbells in each hand hinge forward as far as possible.
Bring the dumbbells towards your lower chest in a straight motion.
Slowly retract back to the start position and repeat.
Using excessive momentum.
Rounding the back.
Pulling towards your neck.
Stand with your feet spaced shoulder width, holding the dumbbells with your palms facing you. Hinge forwards with a flat back.
Leading with the elbows, start by pulling the dumbbells straight towards your chest, once the dumbbells almost reach you bring them back to the start position. Keep your elbows tucked in close and squeeze your shoulder blades together throughout the movement. Brace your core to keep a straight back. Repeat for the desired repetitions.
Avoid using excessive momentum to pull the weights up.
Fitness for all, for life.