Do some strength training exercises that can help boost your chest muscles. Adding muscle also speeds up your metabolism and helps you burn more fat, which may reduce the amount of tissue in your chest area. You can choose to do weightlifting exercises such as pec flyes or use your own body weight with moves such as pushups to sculpt your chest muscles and burn excess calories and fat.  Perform one set of eight to 12 reps of each exercise to start. Gradually build up to three sets as you get stronger.  Keep in mind it is impossible to "spot treat" weight loss — that is, you can't lose fat in just one specific area. Doing a ton of chest exercises may give you really great pecs, but may not affect the fat that covers the muscle. That's why it is important to combine strength training with cardio, too. One of the most effective ways to sculpt your chest muscles is by doing push-ups and variations of them. Push-ups target your chest muscles and the smaller muscles around your chest area. In addition, they can help build back and abdominal muscles, which can help you slim down overall.  Get into a plank pose. Keep your arms straight and your hands slightly wider than your shoulders. Bend at your elbows and lower your body until your chest nearly touches the floor. Remember to keep your abs and leg muscles engaged. Try half-plank, or knee, push-ups if you are unable to do push-ups in a plank position. To do this, start on your hands and knees instead of the plank position, then adjust so that your head, torso, and knees are all in a straight line. Aim to get your groin, chest, and chin to touch the ground at approximately the same time. Your hips should not bend. Consider adding push-up variations such as military push-ups, chest squeeze push-ups, and archer push-ups after three to four weeks to give your chest a new challenge. Pressing any amount of weight up from your chest can also help to strengthen your chest muscles. From chest presses to bench presses, doing a variety of these exercises can help you define...

How would you rephrase that briefly using Vietnamese?
Rèn luyện cơ ngực. Tập chống đẩy. Đẩy ngực. Tập ép ngực.