Things You Should Never Do During Sex, According To Science

Sex is often thought of as spontaneous, passionate, and fun, and it should be. But science also reminds us that some behaviors in the bedroom can be risky, uncomfortable, or even harmful. From physical safety to psychological well-being, here are key things you should never do during sex, according to research and medical experts.

1. Skip Consent

Consent is the foundation of healthy intimacy. Studies published in the Journal of Sex Research emphasize that both verbal and non-verbal consent are essential for a safe and positive sexual experience. Without it, even well-intentioned actions can cross into harmful territory.

2. Ignore Protection

Unprotected sex significantly increases the risk of sexually transmitted infections (STIs) and unplanned pregnancies. The Centers for Disease Control and Prevention (CDC) consistently highlight condoms and other barrier methods as highly effective for reducing these risks.

3. Use Household Items As Lubricants

While grabbing lotion or cooking oil might seem like a quick fix, research in the Journal of Infectious Diseases shows that many non-sexual products disrupt vaginal or rectal pH, increasing the risk of irritation and infection. Always use lubricants designed for intimacy.

4. Hold Your Breath For Too Long

Some people experiment with breath play, but science warns of the risks. According to neurologists, restricting oxygen can cause fainting, brain injury, or even cardiac arrest. Unless supervised by trained professionals in a controlled setting, it’s not safe.

5. Ignore Pain Signals

Pain during sex is not always “normal.” Research from the American College of Obstetricians and Gynecologists stresses that persistent pain could indicate infections, endometriosis, pelvic floor dysfunction, or other medical conditions. Ignoring it can worsen the problem.

6. Mix Alcohol And Unsafe Practices

Moderate alcohol can lower inhibitions, but heavy drinking impairs judgment. Studies show that intoxication increases the risk of unprotected sex, injuries, and even consent misunderstandings. Clear minds lead to safer, more enjoyable intimacy.

7. Skip Hygiene

Science backs up the importance of cleanliness. Washing hands and genitals before and after sex helps reduce the risk of urinary tract infections and the spread of bacteria. For people with vulvas, urinating after sex is recommended to flush out bacteria.

8. Overlook Emotional Aftercare

Sex affects the brain as much as the body. Research in Archives of Sexual Behavior highlights the role of oxytocin and endorphins in bonding after sex. Ignoring aftercare, like cuddling, communication, or reassurance, can negatively impact emotional connection.

The Bottom Line

Sex should be safe, pleasurable, and respectful. Science shows that avoiding these mistakes not only protects your physical health but also strengthens emotional intimacy. By prioritizing consent, safety, and communication, couples can make their experiences more satisfying and sustainable.

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