You have reached the Canadian website for Human Kinetics. Only orders shipping to a Canadian address can be completed on this website.


If you wish to continue click here, or contact the HK Canada office directly at 1-800-465-7301. If you wish to select the HK website for your region/location outside of Canada, click here

Human Kinetics Logo

Purchase Courses or Access Digital Products

If you are looking to purchase online videos, online courses or to access previously purchased digital products please press continue.


Mare Nostrum Logo

Purchase Print Products or eBooks

Human Kinetics print books and eBooks are now distributed by Mare Nostrum, throughout the UK, Europe, Africa and Middle East, delivered to you from their warehouse. Please visit our new UK website to purchase Human Kinetics printed or eBooks.

Feedback IconFeedback

Visualize lung movement to improve your breathing

This is an excerpt from Breathing for Peak Performance by Eric Franklin.

Costodiaphragmatic Recess

Visualizing how and where the lungs move when you inhale helps improve your breathing. The lungs expand outward during inhalation, but they also slide into available space between folded layers of parietal pleura. One of the largest of these layers lies between the lowest ribs and the back of the diaphragm at the junction of the costal and diaphragmatic pleura. This area is called the costodiaphragmatic recess.

  1. In a comfortable upright sitting or standing position, place your hands on the back and bottom of the rib cage, and visualize the area between the ribs and the diaphragm.
  2. As you inhale, imagine the lungs sliding into this area. They are opening the space between two folds of parietal pleura—one covering the diaphragm, the other covering the inside of the rib cage.
  3. Compare the feeling to sliding your hands into a glove. As you exhale, the lungs slide out of this area and the costal and diaphragmatic pleura close.
  4. Inhale and exhale several times, and imagine the lungs sliding into the costodiaphragmatic recess (figure 3.6). Use the metaphor of sliding your hands into gloves to help you with embodying this anatomical function.

Figure 3.6