The information given in this book is based on a nationally representative survey of over 2,000 people aged 18-74 years conducted in Finland in 1992. It has been possible to compare the data from the year 1992 with the data from a similar survey carried out in 1971. The results show a change towards greater diversity and equality in sex life and towards increasing sexual pleasures. This book is a serious scientific study, its purpose is to expand people's understanding of their most intimate area of life.