Evidence-Based Sex Education

Real medical data, practical advice, and honest facts about male anatomy

All Articles

Is Penis Size Actually Increasing? The 25% Study

Stanford found a 24% increase over 29 years. But is it real growth or measurement bias? We analyze the data.

The Below Average Paradox

Why 65% of men think they're below average when only 50% can be. The psychology behind size perception.

Penis Size by Race: The Data

What studies actually show about racial differences. The truth is less dramatic than stereotypes suggest.

World Penis Size Rankings

Comprehensive country-by-country breakdown with methodology notes and sample sizes.

Ball Size vs Dick Size: Any Connection?

Medical data on whether testicle size correlates with penis size. The surprising truth.

Why Your Dick Looks Small to You

The physics and psychology of why everyone thinks they're smaller than they are.

Penis Growth Timeline by Age

When growth starts, peaks, and stops. Medical data on what's normal from ages 10-21.

Complete Penis Development Guide

Everything about male genital development from conception through adulthood.

Size Changes from 18 to 25

Does size change in your early 20s? What the studies actually show.

Complete Condom Size Guide

Every brand, every size, actual measurements. The comprehensive guide that should exist.

Do You Actually Need Larger Condoms?

Size charts and measurements to determine if you need larger condoms for safety.

Free Condoms by Mail (2025)

Every legitimate program that ships free condoms. State-by-state breakdown.

What Sex Ed Gets Wrong About Condoms

Why 'one size fits all' is dangerous advice leading to 15% failure rates.

Your First Time: Reality Check

What actually happens vs expectations. Why 87% say it was awkward.

Virginity Loss Age Statistics

When people actually lose their virginity. Global data by country and generation.

Male Sexuality Statistics

How many men have same-sex experiences? Does size differ by orientation?

Performance Anxiety Guide

Why it happens, how common it is, and evidence-based ways to overcome it.

Testicle Size and Testosterone

The actual relationship between ball size and hormone levels. Medical facts only.

Porn Camera Tricks Exposed

How lens choice, angles, and casting create unrealistic expectations.

Locker Room Lies

Debunking myths about shower vs grower, hand size correlations, and other legends.

Locker Room Etiquette Guide

The unwritten rules every guy should know. Plus why comparison is pointless.

Big Dick Problems: Medical Facts

The actual medical and practical challenges of being significantly above average.

TSA Scanner Problem Guide

Why airport security flags some men and practical solutions that work.