- 0 Muscle Mass
- Muscle Mass Retraction
The user can decrease the muscle mass (all or only certain muscles) of oneself and others, removing any physical abilities pertaining to muscle, such as strength, speed, stamina and durability.
- Overuse, use without proper training, or use without the proper anatomical adaptations may render target's body weak.
- The Moon (Adventure Time)
- Sasuke Uchiha (Naruto Shippuden: Kizuna); via Chidori Senbon