This latest challenge isn't about losing weight, saving money or eating more vegetables.

Church members, most of whom are in their 20s and 30s, will get a journal to track their sexual encounters - or lack thereof - and jot down their feelings. Ranters can vent on the church's blog, which is set to go up after the challenge starts, at www.30daysexchallenge.com. (ed.- safe for work, but the

It's about having sex. Lots of it. As in every day, if you're married. Or not at all, if you're single.

"When you talk about sex, everybody expects the church to say God hates sex," Wirth said. "That's just not true. I really believe that God wants us to have great sex."