You can directly support Crash Course at www.subbable.com/crashcourse Subscribe for as little as $0 to keep up with everything we're doing. Also, if you can afford to pay a little every month, it really helps us to continue producing great content. Sex is complicated for different reasons in different cultures. But, it's the entire purpose of life, so there's no reason to blush. In this episode of Crash Course Psychology, Hank talks about Kinsey, Masters and Johnson, Sexuality, Gender Identity, Hormones, and even looks into the idea of why we have sex. There's a lot to go through here. -- Table of Contents: Alfred Kinsey & Sex Surveys 0:00 Biological Sex & Gender Identity 2:01 Masters & Johnson 3:07 Sex Hormones 5:31 Physiological & Social Factors of Sex 7:11 Sexual Orientation 8:51 Why We Have Sex 10:17 -- Want to find Crash Course elsewhere on the internet? Facebook - www.facebook.com/YouTubeCrashCourse Twitter - www.twitter.com/TheCrashCourse Tumblr - thecrashcourse.tumblr.com Support CrashCourse on Subbable: subbable.com/crashcourse