How do you act scary?

How To Look Intimidating
  1. Stand in front of a mirror.
  2. Relax your facial muscles. As you practice this occurs more quickly.
  3. Lower your chin just a tad. This creates an even more threatening, maniacal look. Seriously. They’ve researched it.
  4. You’ll know you’ve got it right when you have “dead eyes.”

How do you scare someone in a fight?