Ramadan: What are some polite/creative ways to reject/avoid a handshake with the opposite gender?

How about you NOT work with boys? My husband is really picky about this, he told me just to ask/tell the professor I work with girls only. Copy the Chinese or whatever Asian culture it is that puts their hand over their heart. And say "Out of respect for you and myself, I do not shake the hand of a man/woman who is not related to me."