From LSWiki

Class: Physical Conditioning Skills

Attribute: Vitality
Pedagogy: Body Alteration
Specialty Required: Degree I
Hidden Skill

This skill represents the ability of one's body to repair damage and recovery from injury.
The higher this skill, the faster one will heal from being wounded.
Development Information: The regeneration skill was created by Chaos;
the source code was last updated Wed Jan 31 04:34:13 2007.

Note: Not to be confused with Regrowth.

Trainers

Temple of Discordia: Erasmus <100
Association required:
Weapons of Vengeance: Varn
Guild required:
Reapers: Holton Jax
Shapeshifters Maramar
zetesai: Linp
Quest required