On "Vitamin D," the girls mashed up a pair of songs. Watch them perform "Walking on Sunshine" and "Halo" now.
On the Glee episode "Vitamin D," the boys take on the girls. In this clip, the men mash up a Bon Jovi classic, "It's My Life."
On Vitamin D, Glee's sixth episode, the boys face off against the girls. Watch the official promo for the episode now.

Glee Season 1 Episode 6 Quotes

We're gonna win. You're gonna lose. Deal with it.

Finn [to Lea]

Terri: I'm the new school nurse.
Will: But you don't have any training.
Terri: Please, Will, it's a public school.