Standing One Arm Triceps Extension with Dumbbell· Stand with your feet shoulder width apart, your back straight and your abs drawn in.
· Hold a dumbbell in your right hand with your palms facing up.
· Raise the dumbbell over your head and slowly lower the dumbbell in an arc behind your head, so that the dumbbell lines up with your spine.
· Slowly raise the dumbbell back up to the starting position.
· Switch arms and repeat.
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