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Michael Castleman is the world’s most popular sexuality writer. His twice-monthly blog on PsychologyToday.com, “All About Sex,” launched in 2009, has amassed more than 50 million views. The free Question & Answer site he has published since 2010, GreatSexGuidance.com, has attracted 2 million more.

Each week, Michael explores a different aspect of human sexual behavior.

Subscribe to get full access to the GreatSexGuidance newsletter and website. No matter your age or sexual orientation, you will learn about how you can improve your sex life in many ways. Never miss a new mostly-weekly post.

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