The jelqing technique involves using your thumb and forefinger to repeatedly stretch the penis in a downward motion from the base to the head. The idea behind this technique is to increase blood flow to the penis, which may result in increased size over time. However, this technique can cause injury, including pain, swelling, and even permanent damage to the penis.

It is important to note that the size of the penis is largely determined by genetic factors and cannot be significantly altered by exercise or other methods. If you have concerns about the size of your penis, speak with a healthcare professional for guidance and support. They may be able to provide you with safe and effective treatment options, such as counseling or medication, if necessary.