In brief: Ten clear habits and realities: body-first health, check testosterone if needed, treat erection changes as signals, limit porn, learn technique, groom, and maintain habits long-term. Sexual health is one of the most important pillars of a man’s life, yet most men grow up learning about it through rumor, incomplete internet advice, or moments of trial and error. It’s no surprise many carry quiet worries, unanswered questions, or a sense that they should already “just know” everything.