Turn up the heat

In one sentence

Sexual intimacy is not a "bonus" to a healthy marriage; it is a vital, God-designed expression of covenant love that requires intentionality, communication, and the removal of psychological and spiritual barriers.

Why read this (and who it's for)

Most Christian marriage resources focus heavily on communication, shared values, and "the spiritual life," often treating sex as a private, secondary byproduct of a good relationship. Leman argues that this creates a vacuum where sexual frustration can erode a marriage. This book is for married couples who feel like "roommates," those who have lost their spark, or those who feel guilty about their sexual desires. After reading, you will be able to identify specific "blockages" in your intimacy and implement a proactive plan to rekindoliate your physical connection.

The big idea

Leman’s central thesis is that sexual intimacy is a spiritual gift and a primary means of bonding. He argues against the "dualism" that separates the spiritual life from the physical life. In his view, a marriage that ignores the sexual dimension is incomplete because it ignores a fundamental way that God designed humans to experience pleasure and unity.

The logic follows a three-pronged approach: Theology, Psychology, and Practice. He asserts that because we are created in the image of a God who is a lover (in the sense of passionate, creative, and covenantal love), our sexuality is not "dirty" or "secondary." It is a holy expression of the covenant. However, because humans are flawed, we develop "blockages"—emotional, physical, and spiritual hurdles—that require deliberate, honest work to dismantle.

Key ideas

The Theology of the Body

• What it is — The body is not a vessel for the soul; it is a fully human expression of the spirit. Sexual intimacy is a "sacramental" act where the physical meets the spiritual.
• Why it matters — If you view sex as merely a physical release, you will eventually find it hollow. If you view it as a spiritual act, it becomes a way to worship God and honor your spouse.
• In the book — Leman emphasizes that God's design for sex is for union. It is the physical manifestation of the "one flesh" covenant.

Identifying the "Blockages"

• What it is — Most sexual problems aren't about a lack of "technique"; they are about underlying emotional wounds, fears, or unresolved conflicts.
• Why it matters — You cannot "will" your way into desire if there is a wall of resentment or fear standing in the way. You must identify the specific wall first.
• In the book — He categorizes blockages into areas like fear of vulnerability, past hurts, body image issues, and "performance" anxiety.

The Communication Gap

• What it is — Couples often fail to talk about sex because they lack the vocabulary or the safety to do so.
• Why it matters — Without honest communication, you are guessing at your partner's needs, which leads to frustration and "guessing games" that eventually fail.
• In the book — Leman encourages "safe" communication where the goal isn't to critique the other, but to share desires and boundaries.

The Importance of Foreplay (The "Slow Burn")

• What it is — For many, especially women, sexual desire is not a light switch; it is a slow-building fire that starts long before the bedroom.
• Why it matters — If you treat sex as a scheduled event rather than a continuous connection, you miss the emotional "warm-up" required for genuine intimacy.
• In the book — He highlights the importance of emotional intimacy, kindness, and "non-sexual" touch (hugging, holding hands) as the fuel for the fire.

Reclaiming the "Play"

• What it is — Sex should be a space of joy, experimentation, and playfulness, not just a duty or a routine.
• Why it matters — Routine is the death of desire. Playfulness lowers inhibitions and allows for a more adventurous and connected experience.
• In the book — Leman encourages couples to be creative and to view their sexual journey as a lifelong exploration of one another.

Frameworks & tools

The Blockage Audit

To move forward, you must identify what is stopping the "heat." Use this checklist to identify where the friction lies:

1. Emotional Blockages: Is there unresolved anger? Is there a lack of trust? Do you feel "seen" by your spouse?
2. Physical Blockages: Are there health issues, exhaustion, or physical pains? Is the environment conducive to intimacy?
3. Spiritual Blockages: Is there a sense of guilt? Do you view sex as "dirty" or a "last resort"?
4. Relational Blockages: Is the "romance" dead? Do you spend more time arguing about kids/finances than connecting?

The "Slow Burn" Connection Plan

To rebuild intimacy, move from "Action" to "Connection":

1. Daily Connection: Spend 15 minutes of undistracted conversation (no phones, no kids).
2. Non-Sexual Touch: Increase physical contact (hugs, kisses, touch) that does not lead to sex. This removes the pressure of "performance."
3. The Date Night Rule: Schedule intentional time where the sole focus is on your relationship as lovers, not just partners.
4. The "Yes" Experiment: For a set period, try to say "yes" to new ideas or requests from your spouse regarding intimacy to build a "yes" culture.

Memorable examples & stories

The "Roommate" Syndrome

Leman describes couples who have become incredibly efficient at running a household—scheduling, parenting, and budgeting—but have completely ceased to see each other as lovers. Lesson: Efficiency is the enemy of intimacy.

The Fear of Vulnerability

He shares the story of a man who was afraid to be intimate because he felt "unworthy" or "unattractive." He was waiting for his wife to initiate, but she was waiting for him to show he wanted her. Lesson: Both partners often wait for the other to take the first step in vulnerability.

The "Duty" Trap

Leman discusses the danger of "scheduled" sex that feels like a chore. When sex becomes a "to-do" list item, the heart is removed from the act. Lesson: Intimacy requires a heart-connection, not just a calendar entry.

Key quotes

"Sex is not a 'extra' in a Christian marriage; it is a vital, God-ordained way for a husband and wife to express their unique, covenantal love." (Paraphrased) Why it matters: It reframes sex as a spiritual duty of love, not a luxury.

"The greatest barriers to intimacy are rarely physical; they are almost always emotional and spiritual." (Paraphrased) Why it matters: It directs the reader to look inward and at the relationship, rather than just at the bedroom.

"Intimacy is built in the quiet moments of the day, not just in the heat of the night." (Paraphrased) Why it matters: It emphasizes the importance of daily, consistent connection.

How to apply it

This week

1. The "No-Pressure" Touch: Commit to 10 minutes of cuddling or holding hands tonight with the explicit agreement that it will not lead to sex.
2. The Appreciation Audit: Tell your spouse three specific things you find beautiful about them (physically or character-wise) today.
3. Identify One Blockage: Sit down alone and honestly write out what you think is the biggest barrier to your intimacy (e.g., "I feel exhausted," or "I'm angry about X").

Ongoing

1. Daily Connection Time: Set a "no-tech" 15-minute window every evening to talk about your day and your feelings.
2. The "Date Night" Habit: Maintain a consistent, recurring date night where the kids are not allowed to be part of the conversation.
3. Communication Check-ins: Once a month, ask: "How are we doing as lovers? Is there anything you've been wanting to try or talk about?"

Common pitfalls

• The "Quick Fix" Fallacy: Many readers will try to "fix" their sex life by buying a new toy or trying a new position without addressing the underlying resentment or lack of communication. Leman insists on the emotional work first.
• The "Performance" Trap: Trying to make sex "perfect" can actually increase anxiety. The goal should be connection, not a flawless performance.
• Ignoring the Spiritual: Some might try to apply the psychological tools without the spiritual foundation of "covenant." Without the belief that this is a holy, God-ordained act, the motivation may eventually wane.

Connects to

• The Meaning of Marriage (Timothy Keller): Provides the theological framework for why marriage is a picture of Christ and the Church, which informs the "covenant" aspect of Leman's work.
• The Seven Principles for Making Marriage Work (Keller/Garcia-Moreno): Offers a broader structural framework for the communication and friendship that Leman argues must underpin sexual intimacy.

If you remember only three things

• Sexual intimacy is a spiritual, God-designed expression of the covenant, not a secondary "extra."
• Most sexual problems are actually emotional or relational "blockages" that must be identified and cleared.
• Intimacy is built in the "slow burn" of daily connection, kindness, and non-sexual touch.

Internalize it

• Reflection questions
  • What is the primary "blockage" (emotional, physical, or spiritual) currently standing between me and my spouse?
  • Am I treating my spouse as a partner in a covenant or as a roommate in a household?
  • How can I create more "non-pressured" physical touch in our daily lives?
• Flashcards
  • Q: What is the primary "blockage" Leman identifies as the root of most sexual issues?
  • A: Emotional and spiritual barriers (fear, resentment, lack of trust) rather than just physical ones.
  • Q: How does Leman define the "Slow Burn"?
  • A: The idea that sexual desire, especially for women, is often built through emotional connection and non-sexual touch over time.
  • Q: Why is "Play" important in a marriage?
  • A: It lowers inhibitions, removes the pressure of "performance," and allows for joy and experimentation.
  • Q: What is the spiritual significance of sex in Leman's view?
  • A: It is a "sacramental" act of union that reflects God's design for covenantal love.
  • Q: What is the "Roommate Syndrome"?
  • A: When a couple becomes highly efficient at running a household but loses the romantic and sexual spark of their relationship.

Fidelity note

I have a high-to-medium confidence in the core themes of this summary. Kevin Leman is a well-known author in the Christian marriage space, and his "Turn up the Heat" book consistently emphasizes the "blockage" model and the integration of spiritual/emotional/physical health. However, because I am summarizing from memory, specific nuances of his "Play" section or specific anecdotes may be generalized. Readers should verify the specific "Blockage" categories to ensure they align with Leman's specific terminology.