Sex can make people feel pleasurable and apparently, you can have as many sex activities as you like. However, if you find that you are skipping meals to go for a quick romp in the sheets, you should probably be worried about having too much sex. While scientists have proved that sex can decrease anxiety and improve your moods, sex can be unhealthy if it interferes with your day to day life. However, it is true. Read on to find the possible negative effects of too much sex and adjust your sex life if needed. Rug Burns or Bruises This is one obvious effect because of the rubbing during sex activities.