1. Set an adjustable bench to a 30- to 45-degree angle and lie back on it with a dumbbell in each hand.
2. Turn your wrists so your palms face each other.
3. Press the weights straight over your chest and then, keeping a slight bend in your elbows, spread your arms open as if you were going for a big bear hug.
4. Lower your arms until you feel a stretch in your pecs and then bring the weights back together over your chest.