Stand straight with your feet roughly shoulder width apart.
Hold a barbell with both 4 palms facing forward, roughly shoulder width apart. Allow your arms to hang straight down so the bar rests against the front of your thighs.
Make sure your elbows are slightly bent.
Slowly bend your elbows to raise the bar to where your arm makes a 90 degree angle. Make sure you keep your back straight, head up and elbows close to your sides.
Slowly straighten your arms to lower the bar back to the starting position.
Repeat for desired amount of reps.