Fatigue, Stress, and Libido: What No One Really Explains

A few months ago, a customer came into the store with a phrase I hear often: “I don’t feel like anything anymore—is that normal, or is there something wrong with me?” She was exhausted, overbooked, stressed by her job, and for six months she had been looking at her partner like a pleasant colleague. No hostility—just a total absence of desire. What she was experiencing is neither rare, nor shameful, nor mysterious. It’s biology, period. Fatigue and stress have a direct chemical effect on sexual desire, and understanding this mechanism is already half the battle. In this article, I’m not going to throw a list of “10 tips to boost your libido” at you, because that would be lying to you. I’m going to explain what is really happening in your body and mind—and what you can do, concretely, to stop simply enduring it.

What stress really does to your desire (and it’s chemical)

Cortisol—the major stress hormone—is a real bedroom saboteur. When your body is in “alert” mode, it produces cortisol nonstop. And physiologically, cortisol is testosterone’s direct enemy—in women and men alike. Not because your body is poorly designed, but because evolutionarily, when you’re running from a predator, it’s not the time to think about sex.

The problem is that in 2024, the predator is your open-plan office, your phone ringing at 10 p.m., and your calendar packed through March. Your body can’t tell the difference between real danger and an endless meeting. It keeps cortisol levels elevated continuously—and your libido pays the price all the time.

The cortisol, testosterone, and estrogen trio

Here’s what’s happening biologically:

• Chronic cortisol tends to lower free testosterone—the desire hormone, present in everyone
• It can disrupt estrogen production, which tends to dry out the mucous membranes and can make intercourse uncomfortable (and therefore less desirable)
• It would draw on part of the progesterone synthesis pathway, the hormone that helps stabilize mood

Result: less desire, less potential pleasure, and a less stable mood. An unglamorous cocktail that has nothing to do with “no longer loving your partner”—even though the two are often confused.

Fatigue: desire killed before it is even born

Fatigue acts differently from stress, even though the two often compound each other. When you are exhausted—physically or emotionally—your brain makes trade-offs. It puts everything that is not vital into standby mode. Libido is part of that package.

More specifically, lack of sleep lowers testosterone levels (by 10 to 15% after one week of reduced sleep, according to a University of Chicago study published in JAMA (2011)). And it is not only physiological: fatigue also suppresses the desire for emotional connection, which is often the trigger for physical desire—especially for women.

Fatigue and frequency: the vicious cycle

There is a particularly insidious cycle that I often see at the shop. Someone no longer feels like having sex. They stop having sex. Distance sets in. Guilt builds. Guilt generates stress. Stress causes fatigue. Fatigue cuts desire even further. And there you have a couple who are doing fine but have not touched each other for three months without really understanding why.

This is not a crisis. It is a vicious cycle. And like any cycle, you often only need to intervene at one link to break it.

Men, women—stress does not look the same for everyone

I see it very clearly in conversations at the shop: fatigue and stress do not kill libido in the same way for everyone.

This table is not universal—everyone is different—but it reflects what I observe. What matters is recognizing your own pattern rather than comparing yourself with a standard.

What doesn't work (and why we do it anyway)

Let's be honest about the wrong approaches. Because when libido drops, the advice people hear first is often completely off the mark.

"Force yourself; it will come with practice"

Sometimes, yes. Often, no. And the problem with this advice is that it makes the person feel even more guilty if it doesn't work. Forcing yourself when you're exhausted can even create a negative association with sex—exactly the opposite of what we're looking for.

"Light some candles, make an effort"

The atmosphere helps. But if the source of the problem is physiological (cortisol, lack of sleep, hormonal imbalance), no amount of candlelight in the world will fix it. It's like treating a broken bone with a Band-Aid.

"It's age"

Maybe. But stress and fatigue affect libido at 25 just as they do at 50. Automatically attributing a drop in desire to age means overlooking a cause that can actually be treated.

What really works: practical steps, without the romance

I'm not going to sell you a fantasy. There is no magic wand. But there are real levers that clients have tried, and they often work better than you'd think.

1. Address the root problem first

If you're burned out, sleeping five hours a night for the past two months, or carrying the weight of a family or professional situation alone—this is where you need to act first. Libido is a barometer, not the disease. Medical follow-up, taking time off work if necessary, and therapy aren't luxuries.

2. Make room for your body outside of sex

Regular, moderate physical activity (for example, 30 minutes several times a week) helps regulate cortisol and supports hormonal balance. This isn't about losing weight—it's about rebalancing your body chemistry. Meditation and slow breathing have the same effect: they activate the parasympathetic nervous system, the one that allows you to “let go.”

3. Touch without pressure

Reintroduce physical contact without the pressure of sex. A massage, a long embrace, a caress on the back. It may seem insignificant, but it boosts oxytocin—the bonding hormone—without triggering performance anxiety.

A product I often recommend in this context is Shunga’s special libido erotic massage oil—not to pretend you’re in the mood, but to create a ritual of sensory contact that doesn’t pressure you into anything.

4. Supplements: with your eyes open

Libido boosters don’t replace sleep or stress management. But alongside an improving lifestyle, some can provide a real boost. My catalog includes products I consider trustworthy:

• Apium by Eros, a unisex herbal libido enhancer, 30 cc, to be used as a course
• Feminil+ by 500Cosmetics, 30 capsules designed to support female libido
• Xpower’s Hot Shot Sex Booster, in a convenient shot format, for periods of occasional low libido

My position on this: I don’t believe in miracles in a bottle. But if your lifestyle is becoming healthier and you want a natural hormonal boost, these products have their place.

5. Talk to your partner—really talk

Not “I’m tired,” muttered as you turn over in bed. A real conversation, outside the bedroom, about how you feel. A drop in libido often creates distance, which itself leads to misunderstandings. A partner who doesn’t understand may interpret it as personal rejection. Clearly naming things—“I’m not in the mood right now; it’s not you”—relieves the pressure that makes the problem worse.

What if we redefined “being in the mood”?

There’s a concept I really like that sexologist Emily Nagoski popularized: responsive desire versus spontaneous desire. Spontaneous desire is “I want it right now, for no reason.” Responsive desire is “I wasn’t in the mood, but once we started, the desire came.”

Most people, and women in particular, experience responsive desire—especially when they’re stressed and tired. It’s not a malfunction. It’s a different kind of desire that needs to be triggered by something (an atmosphere, touch, stimulation) rather than arising spontaneously.

Understanding this changes everything. Because instead of telling yourself “I don’t feel anything anymore” (which is terrifying), you can tell yourself “my desire needs a trigger” (which is manageable).

Triggers to relearn

Everyone has their own. For some, it's erotic reading. For others, a hot bath beforehand. For still others, a sex toy used solo to reconnect with their own body before even thinking about someone else. Regular masturbation — even without orgasm — maintains the elasticity of desire. It tells your brain: "this part of you still exists."

What I've learned over years of running a shop

What I take away after thousands of conversations with customers who are experiencing exactly what I'm talking about here is that shame makes everything worse. People come in with this question, often in a low voice: is this normal? And the answer is almost always yes. Yes, it's normal. No, you're not broken. No, it's not a life sentence.

Libido isn't a fixed reserve that you either squander or preserve. It's a living system that responds to your environment, your hormones, your emotions, and your sleep. When one or more of these variables goes off track, desire fades. When they rebalance — and they can — it returns. Not necessarily exactly as before, but it returns.

What you're going through if you recognize yourself in every paragraph of this article is a normal response from a human body under overload. Not the end. Rather, a signal — that something deserves your attention. And that deserves to be heard.

Sources

This article is intended for informational purposes and does not replace personalized medical advice.

• PubMed — Effect of 1 week of sleep restriction on testosterone levels in young healthy men (study published in JAMA, 2011).