You can flood your bloodstream with extreme amounts of adrenaline to temporarily boost your Strength or Dexterity.
Benefit
Once per day, as a swift action, you can temporarily increase either your Strength or your Dexterity, granting the chosen ability score a +4 mutation bonus. The bonus lasts for a number of rounds equal to 3 + your Constitution modifier (minimum 1 round).
Special
You can take this mutation multiple times. Each time you do, you gain one additional daily use of this mutation. The bonus from multiple uses of this mutation do not stack.