Loving and being loved by someone in return makes wounds heal faster, due to the release of oxytocin in the blood.
Healing is a matter, on the one hand, of endurance (I.C. Recognizing how pain enduringly writes a person's relationships and how to remain open to an adjacent self) and on the other the capacity to establish a particular relationship to death (i.e. Rejecting the trauma of, say, dying in a crowd in favor of the acceptance of the possibility of a normal death).
Healing is impossible in loneliness... it is the opposite of loneliness. Conviviality is healing. To be healed we must come with all the other creatures to the feast of creation.

The tongue is the fastest healing part of the body

Will the bunny’s injury heal?Yes, the doctors are very hop-ful
Healing is not the elimination of disease but the transformation of a person, a self that is a bodily being.
Dolphins can rapidly heal from extreme injuries, such as shark bites, and regenerate their original body shape.
The vibrations caused by a cat's purring help speed up the healing process of fractured bones and wounds.
putting sugar on a cut will make it heal faster.