Silent Running

Perk Silent Running
Type	{{{type}}}
Requirements	Level 6, Sneak 100%
Ranks	1
Bonus	{{{bonus}}}

With this perk, you now have the ability to move quickly and still remain quiet. You can sneak and run at the same time. Without this perk, you would automatically stop sneaking if you ran.

Note: It is probably the most useful perk that a sneaker can have.