Start by holding the dumbbells by your sides with palms facing behind you.
With your arms straight, raise them up until your hands are at shoulder height.
Slowly lower them back to the start position and repeat.
Swinging the weights up with momentum.
Hinging from the hips to pull up weight.
Bending the wrists.
Stand straight with your feet shoulder width apart, holding the dumbbells in front of your quads with your palms facing them.
Start with your arms extended with a slight bend and raise your arms forward and up until they're aligned with the shoulders, then slowly retract back down to the start position. Keep your arms fixed throughout the movement. Repeat for the desired amount of repetitions.
Avoid using excessive momentum or raising your arms too far above shoulder height.