Like HowStuffWorks on Facebook!

Science of Sex Appeal: Love for Life

Can humans love for life? According to professor Helen Fisher, there are signs of it all around us. Watch more in this clip from Discovery Channel's "The Science of Sex Appeal."


Most Watched in Relationships

Most Watched in Relationships
1:49

Strange Sex: Sexual Surrogate

Most Watched in Relationships
1:44

Little Parents, Big Charlie: Charlie's Party

Most Watched in Relationships
1:40

Publicity Mashups: TLC New Year's Sex Mashup

Most Watched in Relationships
1:11

The Little Couple: Surrogate Pregnancy Risks

Most Watched in Relationships
3:04

Toddlers and Tiaras: Brooke's Dad

Most Watched in Relationships
1:55

Scorned: Cheating Wife Bored With Her Husband

Most Watched in Relationships
1:58

My Big Fat Gypsy Wedding: Gypsy Housewives of the UK

Most Watched in Relationships
1:46

Hoarding: Fabric-aholic

Most Watched in Relationships
2:44

Say Yes to the Dress: Not a Virgin

Most Watched in Relationships
1:10

Sister Wives: Brother Husbands?

Most Watched in Relationships
2:15

Sister Wives: Co-ed Pool Party

Most Watched in Relationships
1:24

Brides of Beverly Hills: Mamie Van Doren


Recent Videos in Relationships

Recent Videos in Relationships
1:54

Baby Week: Congrats, You've Got Quads!

Recent Videos in Relationships
2:10

Baby Week: Easy Right?

Recent Videos in Relationships
2:05

Ask Rene: My Partner Doesn't Want Me to Breastfeed

Recent Videos in Relationships
2:02

Ask Rene: My Mother-in-Law is Ruining My Life

Recent Videos in Relationships
1:35

Ask Rene: My Sister-in-Law is a Nightmare! Help!

Recent Videos in Relationships
1:08

Bates Family: A Big Bates Secret

Recent Videos in Relationships
1:50

Bates Family: Checking Sugars

Recent Videos in Relationships
1:50

Bates Family: There's More to Life Than Chores

Recent Videos in Relationships
2:31

Bates Family: Bates Style Birthday Party

Recent Videos in Relationships
2:31

Say Yes to the Dress Atlanta: Feathers on the Beach?

Recent Videos in Relationships
1:09

Say Yes to the Dress Atlanta: Vintage Prom Vomit

Recent Videos in Relationships
2:11

Toddlers & Tiaras: Living Doll