Exercise Advice: Lie flat on your back on a free-standing flat bench. Have your spotter hand you each dumbbell and slowly press them upward and together. When you press them upward, you want to do so in an explosive fashion. Conversely, be sure that when you lower the dumbbells you do so in a slow and controlled fashion. Repeat this movement for as many repetitions as you can until failure. Remember to always use a spotter when performing this and almost every other free weight exercise!