On the physical level - It can help with the whole body. Each Chakra is linked to different parts of the body, take the Root Chakra for example, your Root Chakra is linked to your legs, your feet, the lower half of your body, it goes all the way up to your Third Eye and Crown Chakra that are linked to your head, eyes, nose, scalp.  So the benefits on a physical level include the full body.

On an emotional level - Sound healing can assist in relieving stress which is often held in the head area, particularly tension headaches or migraines.  It also helps to quiet repetitive thought patterns from a busy mind.

On a mental level - Sound healing helps to move and release emotions which are stored in the body.  The release of these emotions allows for a greater flow of energy throughout the body.

On a spiritual level - Sound can clear negative energies or entities that may be attached to one’s aura or any other part of one’s being.  It also helps to align your chakras and getting your Chi/Prana (life force) flowing.