Stand straight holding the bar up at shoulder height.
Press the bar straight up until your elbows are almost fully extended.
Slowly lower down until you're at a 90 degree bend in the elbows and repeat.
Elbows being behind your hips.
Arching your back too much.
Using legs for excessive momentum.
Ensure that the grips are just above your shoulders.
Press upwards by driving your biceps towards your ears.
Lower the weight down in a controlled manner and avoid the weights clashing.
Back losing contact with the pad.
Wrists bend out of line with forearms.
Feet coming off the ground.
Lie flat on a bench, with your arms straight over your shoulders, holding dumbbells.
Bend your elbows until your arms are bent at approximately 90 degrees.
Extend your elbows back to the start position and repeat.
Moving elbows around.
Using excessive momentum.
Rushing repetitions.