This therapeutic modality is an essential part of ancient eastern medicine and often embraced in alternative western medicine.
Tiny needles inserted along the meridians/energy lines of the body are meant to break up blocked energy (called chi) that is believed to cause pain, illness, and suffering. Those more heavily influenced by western medicine practices believe that acupuncture can relieve a variety of types of pain by tapping into the nervous system and muscles where the pain is held.
According to Mayo Clinic, acupuncture is typically used as a pain-relieving methodology. Some also advocate for acupuncture as a way to reduce stress or promote relaxation.