From LSWiki

Class: Combat Skills
Attribute: Constitution
Pedagogy: Physical Training

The ability to bounce back from shocks quickly.  The higher this skill, 
the more quickly one will recover from being stunned.

See Also: Steadiness

Notes

Trainers

Avalon: Bercilak
Devonshire: Thalask
Kolond: Duthien (only trains dwarves)
Losthaven: Raelan Jax
Mycenae: Kyros
Mordor: Badlokk
Obsidia: Goth
Othrys: Ripheus
Quetlatl: Itozuma Wanders
Shadow Tower: Boko
Shatterspire: Sthlar
Stillwater: Captain Roberts
tlaxcala: Axton
Xi Feng Ming: Shun Lang
Association required:
Kazarak/Kazarzeth: Urdo Wanders
Losthaven Guard: Durit Kolbad
Maidens of the Spear: Sulin
the Stalkers of the Gate: Kalyxes
Sodality of the Nine-Spoked Wheel: Grendal
Guild required:
Aisenshi: Musashi
Battleragers: Borulien
Brute Squad: Fezzik
Hawkmen: Katar
Justicars of Tyr: Edwin
Justicars of Tyr: Strom Thromgald
Knights of the Round Table: Sir Lancelot
Nizari: Hasan Wanders
Ordo Ignis Aeternis: Aedryl
Ordo Ignis Aeternis: Iklam wanders
Verynvelyrae: Sirinil
Quest required