It's easy to treat the intercostals. Run your opposite hand finger tip between your ribs. Press in deeply and feel for a painful point that may even feel like a bump under your finger tip. If you find one (or more) just press and hold for 60 seconds, then continue holding while you take in a long, slow, breath. Then look for more points.
Eventually you can then start to gently stretch the intercostals by raising the arm of the side you are stretching over your head and then extending this side to the opposite.
intercostal muscle
Just keep on massaging it
The intercostal muscle area is located in the area surrounding the ribs. Intercostal muscle pain can be caused by overworking these muscles or by excessive coughing.
the intercostal muscle
Intercostal Muscles
An injury to the body of the muscle or attachment of the tendon is known as a strain. To treat a strain, the affected limb should be elevated and a cold compress applied to the area.
intercostal muscles
the intercostal muscles and the diaphragm
Diaphragm & interna intercostal muscle
The main muscle used is the diaphragm. Also, the intercostal muscle.
The diaphragm and external intercostal muscles are primarily involved in changing the thoracic volume during breathing. The diaphragm contracts during inhalation to increase thoracic volume, while the external intercostal muscles help lift and expand the rib cage.
internal