We all know that Mark and Val have a competitive side, and we get a firsthand look at this when the two of them took on a fitness challenge at East Bank Club.
Be sure to watch their video to see who won and who had to wear a swimsuit on air for losing the bet!
If you'd like to get a "bikini" like Val's, check out Larraines.com here: www.laraines.com/bodydreams-la-imprints-novelty-shirts.html
You can check out East Bank Club here: http://eastbankclub.com/
Follow them on Twitter here: https://twitter.com/#!/EastBankClub
Become a facebook fan here: http://www.facebook.com/eastbankclub?ref=ts