Increase the strength and muscle definition in your arms and shoulders with the following workout. It will take about 12-15 minutes and you'll just need a pair of dumbbells. Complete 12 repetitions of the following 6 exercises: Bent Over Row Bicep Curls Overhead Press Tricep Kickback Bent Arm Lateral Raise Overhead Tricep Extension
Repeat 2 more times for a total of 3 sets. Remember, quality is better than quantity. Be mindful of your form! If you can't complete 12 reps of an exercise with good form, take a quick break, or decrease your weight so you can finish strong.