Ultrasound generates heat through the vibrations caused by the sound waves. When tissues vibrate, this increases friction all the way down to the molecular level, causing the temperature of the targeted tissues to rise. This speeds up the healing process for body pain due to the increase in blood flow of the treated area.
At the same time, it decreases the pain due to the reduction of swelling and edema. It also increases Joint Mobility and tendon extensibility.
Added benefit of using Flexall Gel: anti-inflammatory medicines will penetrate the painful area of the skin which helps to reduce the pain and swelling after an injury (acute or chronic).
Read more here: Pain Relief Without Drugs and Surgery