there are three chambers to the lungs and to listen to all of them efficiently-the dr has to put the stethoscope in 4 different places. once on your upper back (near your shoulder blades), once on the sides of your waist, once on your lower back and then in the front at the center of your chest which is close to your heart.
Chewing gum can also lead to swallowing air, which can cause bloating. If you've got a gum habit, alternate chewing gum with sucking on a piece of hard candy or eating a healthy, high-fiber snack like fruit, vegetables, or lower-fat popcorn.
The most common causes of bloating include: 1  Certain foods and beverages: for example, gas-producing foods like beans, broccoli, cabbage, sprouts; fizzy drinks. 2  Changes in your diet: for example, if you are travelling or on holiday. 3  Swallowing air (for example, if you talk while eating). 4  Constipation.