Jelqing is a physical exercise that is intended to lengthen and enlarge the penis. It is a controversial practice and is not medically proven to have an impact on the size of the penis. There are various synonyms for the term "jelq," including "milking," "stretching," and "massaging." Jelqing is also commonly referred to as "penis enlargement exercise" or "penis stretching." These terms are often used interchangeably, but it is important to note that there are various other ways to promote penis health and improve sexual performance, such as a healthy diet, exercise, and regular medical check-ups.