Read the first part here Best Exercises for Firmer Breasts Part1
4. Burpees
Do a push-up. Once completed, keep your hands on the ground and jump your legs forward so you are standing in a bent over position. Lift hands off the ground and jump into the air as high as you can. Now bend over again, place hands flat on the floor and jump feet back into a push- up position. Repeat four sets of 20 with 30 seconds break in between each set.
5. Medicine ball push-ups
Start in a push-up position, instead this time place both hands on top of a medicine ball. Slowly lower into push-up in four counts, keep abs braced, and push back into starting position. Now remove your right hand and place it on the floor in line with the ball so hands are about half a metre apart. Do another push-up. Return your hand to the ball. Do another push up. Move left hand out to the side and do another push up. Continue this 10 to 20 times and do three to four sets.
6. Straight arm pull over
Lie across a stability ball with only your upper back resting on the ball. Place feet flat on the floor with knees in a 90-degree angle. Hold dumbbells together with both hands and hold above your head with straight arms. Keep arms in starting position and lower dumbbells behind, using only your shoulder joint as far as possible. Slowly return to starting position.
source: womenshealthandfitness.com



