A medical expert has shared a reminder of three common mistakes people should avoid before having sex — warning that each one can negatively affect comfort, performance, and overall experience.

Philadelphia-based physician Dr Jen Caudle, who regularly shares health advice on social media, highlighted the habits in a recent video, explaining that while they may seem harmless, they can have unwanted effects in the bedroom.

1. Taking Certain Antihistamines

According to Dr Caudle, common over-the-counter allergy medications such as diphenhydramine (including Benadryl) can reduce natural lubrication in the body.

She explained that this can lead to dryness, which may make sexual activity uncomfortable.

“Don’t take an antihistamine before sex,” she said. “They can actually dry up vaginal secretions.”

She added that while these medications are useful for treating allergies, their side effects can interfere with natural moisture levels, which play an important role in comfort and intimacy.

2. Shaving Immediately Before Sex

The second warning relates to grooming habits, particularly shaving intimate areas right before sexual activity.

Dr Caudle cautioned that freshly shaved skin can be sensitive and irritated, increasing the risk of discomfort during sex.

“Don’t shave right before sex,” she said. “Your skin could be chafed, irritated, and the friction can make that worse.”

She advised allowing time between shaving and sexual activity to let the skin recover and reduce irritation.

3. Overdoing Alcohol

The final warning is one of the most well-known: drinking too much alcohol before sex.

While moderate drinking may help some people relax, Dr Caudle noted that excessive alcohol consumption can negatively affect sexual performance.

In particular, she pointed out that too much alcohol can impact physical responsiveness and arousal in men, making sexual activity more difficult.

“We always recommend alcohol in moderation,” she said. “Too much can interfere with performance.”

The Bottom Line

Dr Caudle’s advice highlights how everyday habits — from medication use to grooming and alcohol consumption — can unexpectedly affect sexual health and comfort.

While none of the warnings are extreme, they serve as a reminder that preparation can play a role in how positive the experience is for both partners.

In short, a little awareness beforehand may help avoid unnecessary discomfort later on.