Try This Arm Workout For Beginners, Designed by a Personal Trainer

This arm workout move with weights will give you strong shoulders and a powerful back.

• Stand with your feet hip-width apart with a dumbbell in each hand. Lean forward and bend both knees, keeping your back flat. Extend your arms so they're straight and the weights are below your shoulders, palms facing in toward each other. This is the starting position.
• Bend your elbows behind you, pulling the dumbbells straight up to chest level, squeezing your shoulder blades together. Don't arch your back.
• Slowly lower the weights back to the starting position. That's one rep.
• Do 10 reps.