dumbbell standing triceps extension

How to do this exercise

1. Step:1 Stand with your feet shoulder-width apart and hold a dumbbell in one hand.
2. Step:2 Raise the dumbbell overhead, keeping your arm straight.
3. Step:3 Bend your elbow and lower the dumbbell behind your head, keeping your upper arm stationary.
4. Step:4 Extend your arm back up to the starting position.
5. Step:5 Repeat for the desired number of repetitions.