How long should sex last? Sex therapist Sari Cooper shares the answer with Dr. Oz in this video.

Does your lovemaking need a little lift? According to sex therapist Sari Cooper, you and your partner can improve your sex life by focusing on one simple thing. Find out what it is by watching the video.

Wondering if compared to other couples you and your partner are speed demons or slowpokes when it comes to sexual intercourse? Find out what sex therapist Sari Cooper has to say by watching this video.

Vaginal childbirth will cause a woman's vagina to stretch, but there's more to it than that. Certain factors will determine just how much it will stretch, as sex therapist Sari Cooper discusses in this video.

No need to trash his magazines or delete his bookmarks: In this video, sex therapist Sari Cooper discusses the normal—and healthy—role that watching porn plays in a man's sex life.

As time goes on, relationships and roles change but that doesn't mean that women should put desire on the back burner. In this video, sex therapist Sari Cooper talks about the importance of sex in long-term relationships.

Deviating desire is a common complaint among couples in long-term relationships. Learn what you can do if your partner wants sex more than you do (or vice-versa), by watching this video featuring sex therapist Sari Cooper.

There’s no such thing as a sex addiction, says sex therapist Sari Cooper, but some people clearly have problems with sexual compulsions. Find out the difference by watching this video.

To be sexually adventurous with your partner, you could buy out a sex toy store -- or you could try this simple tip from sex therapist Sari Cooper. Watch the video to learn what it is.

It can be hard to go from hot under the collar to hot between the sheets, but when stress and conflict threaten your sex life there's plenty you can do to get your mojo back, says sex therapist Sari Cooper. Watch the video to learn more.