I have learned more about the brain while reading this book than I expected to.  Dr. Henslin relies heavily upon the research of Dr. Amen, who uses a SPECT scan to treat patients with behavioral problems.  Dr. Henslin talks about five specific behaviors that can have a negative effect on marriage.  He goes into what part of the brain is involved in the behaviors based on SPECT scans and then sets forth behavior modification for both members of the marriage.  The final part of the book is useful for all marriages by encouraging Biblical virtues.  There are also appendix that address diet, sexual addiction and hormonal imbalance.Dr. Henslin does a lovely job of expressing how sex is a spiritual act of marriage.  He encourages spouses to be loving towards one another, without being blind to the fact that some pains cannot be overlooked.  He addresses those suffering from depression with honesty and love.  It is clear that Dr. Henslin’s desire is to encourage marriage and healthy love between spouses.  My favorite part of the book was the discussion of the Jewish understanding and celebration of sex within marriage.  It is a book that I would highly recommend to those who are interested in understanding the mental part of marriage and how it relates to the physical and spiritual aspects.