For a bit of interest today, let's look at a Fun Fact:
At 44 characters, the levator labii superioris alaeque nasi muscle (occasionally shortened alaeque nasi muscle) has the longest name of all the human muscles!
Historically known as Otto's muscle, it dilates the nostril and elevates the upper lip, enabling one to snarl. Elvis Presley is famous for his use of this expression, earning the muscle's nickname "The Elvis muscle".
Remember, even the muscles of the face and scalp can get tired and sore. Be sure to include your hard-working snarl into your massage treatment!