Almost every second man subjectively thinks his penis is too small, and wishes for a larger penis. Therefore, an entire "penis industry" has manifested itself on the Internet, which exploits the wish of many men for a larger penis and praises dubious offers. Anyone who enters terms related to "penis enlargement" in search engines will receive thousands of hits. Above all, countless pages appear that promise a "nautral penis enlargement" with the help of massage and stretching exercises, penis extenders or of course with the help of medication products and dietary supplements. In any case, from a professional point of view, all these methods are to be doubted, and some of them must also be expressly warned against.