Stand straight with a slight bend in the knees with the bar over mid foot.
Hinge and extend up to straighten your body.
Hinge and lower back down to the start position.
Arching the back.
Bending the knees too far forward.
Rushing repetitions.
Grip the bar at shoulder width and hinge forwards as far as possible.
Bring the bar 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.