Nei T'ieh Chuan Kung (Internal Iron Fist Training)
By Mantisking
Instead of toughening the hand by thrusting it into increasingly harder substances, this form of Body Hardening Exercise relies more on Chi to issue damage and protect the hand. Both hands are struck against a bag that contains at first beans, then gravel, then iron bearings. While the hand is striking the bag, Chi is concentrated into the hand and the striking surface used. The net result is similar to the external version, but there is less visible damage to the hands. Bonuses: +1 to P.E., +2 to Damage with all hand attacks, +5 to Chi.