A Christian marriage can at times feel overwhelming in regards to following certain rules or protocol which stays in tune with the values, teachings, and beliefs of Christianity.
Sexuality can be one of the most confusing aspects of a Christian marriage for many couples.
Usually the main culprit is over thinking the issue.
If we break it down to simple terms that make sense in a Christianity based manner, then we can see how important sexuality is within marriage.

1. Sex Perspective.
   First let's put sexuality in the proper light.
   Sex is the ultimate celebration in physical terms of the union between a couple.
   Too often intimacy gets linked in with being a "pleasure only" act.
   This makes it sound as if it is in line with going out and having desert.
   Or going to the amusement park for a rollercoaster ride.
   Sex is so much more.
   It is a very important and serious act of joy.
   It is a physical union of bodies and souls with very deep meaning.
   It is a celebration between you, your partner and this great gift God has created.
   
2. The Importance of Sex.
   Now that we have defined intimacy as an act of celebration and an appreciation of God's gifts, we can see that we are dealing with a pretty important aspect within a Christian marriage! Intimacy should not be suppressed or be feared.
   It should be practiced and seen as a wonderful aspect, celebrating the amazing union between you and your spouse.
   
3. The Frequency of Sex for Christians.
   So, should intimacy be practiced on a daily basis or as frequently as possible? Or should sex be limited to only one special time a month or every few months?The answer to how frequent you should enjoy intimacy is a personal manner based on you and your partners desires and comfort level.
   But, sex should neither be "limited" nor should it be "forced".
   That is to say you shouldn't hold back your joys and needs for celebration to only once in a blue moon.
   It should be as frequent as the both of you are comfortable with.
   On the other hand, it should not be forced into, for example, an everyday activity where you feel you need to be intimate on a daily basis.
   Or you just want a "quick release" without much thought to the gift of greatness which intimate sex is.
   

So it shouldn't be treated in a completely casual manner, but should not be limited to an ultra special "once in a blue moon" affair.
It should be as frequent as is comfortable for each Christian married couple.
Perhaps that is multiple times a week, or perhaps that may be a few times a month or less.
A happy medium between each person should be met.