The art also employs joint locks, throws and submission holds. Practically speaking, by using your attacker's energy as your defense, there is no need to be stronger or tougher than the assailant, so Aikido has real advantages when compared with many of the striking arts. Aikido is also a very "morally positive" form of martial arts practice because with proper training, little or no injury needs to occur to an attacker during applications for self-defense.