08/07/2026
Hello, digastric! 👋
Are you a clencher? Do you wake up with headaches? Does your jaw click, pop, or feel tired by the end of the day? Do you carry tension beneath your chin or feel like the front of your neck is always working overtime?
If so, it may be time to meet one of the most overlooked muscles in the body.
The digastric is part of the suprahyoid group and is unique because it has two muscular bellies connected by an intermediate tendon. The anterior belly originates from the digastric fossa on the inner surface of the mandible, while the posterior belly originates from the mastoid notch of the temporal bone. Both bellies meet at a tendon that attaches to the hyoid bone through a fibrous sling.
Functionally, the digastric helps open the mouth by depressing the mandible and elevates the hyoid during swallowing. Every time we yawn, swallow, chew, speak, or coordinate tongue movement, this little muscle is helping behind the scenes.
What makes the digastric particularly fascinating is its relationship with the hyoid bone. The hyoid is the only bone in the body that does not directly articulate with another bone. Instead, it floats within a complex network of muscles and fascia connecting the jaw, tongue, throat, and neck. Because of this, restrictions in the digastric can influence much more than the area beneath the chin.
As bodyworkers, we often explore this muscle with clients experiencing TMJ dysfunction, clenching, headaches, forward head posture, anterior neck tightness, mouth breathing, speech issues, snoring, and airway concerns. Work through the suprahyoid region can help restore mobility to a part of the body involved in breathing, swallowing, speech, and jaw mechanics.
For a little self-care, try placing your fingertips just beneath the jawline and gently exploring the tissue from the chin toward the angle of the jaw. Pair this with slow nasal breathing and a relaxed tongue resting softly on the roof of the mouth. You may be surprised how much tension has been quietly hiding in such a small space.
The digastric may be small, but it sits at one of the body's most important crossroads.
Sometimes the muscles making the least amount of noise are influencing the conversation the most. 🥰
