The power to gain strength through tensing ones muscles. Sub-power of Muscle Manipulation. Opposite to Muscle Mass Weakening.

Also Called

  • Muscle Coiling
  • Muscle Tension Amplification/Augmentation/Enhancement/Expansion/Increase
  • Springlike Limbs


The user can increase ones power by flexing muscles (all or one area at once), granting them enhanced strength and durability, depending on the amount of muscle that can be flexed.




  • Weight may slow down the user based on the amount of power used.
  • Overuse, use without preparation with training or without required attributes may cause slight to fatal burnout.
  • May begin to drain the user's power, durability, and speed after prolonged use.

Known Users

Known Objects

  • Mikado Arms (Xiaolin Showdown)
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