Dumbbells can be used for more than old standby weight training exercises. Introduce some variety into your chest routine. Training outside the box in different angles will lead to strength gains and muscle soreness. (Try another unique approach: Double Tension Training: Taking Your Dumbbell Chest Exercises to the Next Level.)
You shouldn't do the same set workout on every chest day. After some workouts, I can feel the burn in my upper chest the next day. On other days, because of my exercise selection the day before, my lower chest and the pec fibers near my sternum experience serious DOMS [delayed onset muscle soreness]. Keep your body guessing, and you won't stall your progress.
A John Meadows special. If you do them properly, you won't be able to go too heavy. Aim for sets of 12 to 15 reps.
This is a good warm-up exercise to fill your chest out before tackling heavier pressing movements. Be careful not to go too wide in your range of motion or your shoulders might suffer.